My First Presentation

In Thailand, I never had to make a presentation and present it in front of the class, but since I moved to the United States, schools are more advanced and there are many presentations that you have to make throughout your school years.

So this is the first presentation in my life that I presented in front of the class and it’s about Jewish Migration. It might not be as good as the last one though.

Press “S” or press the cog wheel for speaker notes (there’s not much but there’s some)

And there it is. Thank you for reading.

My Best 8th Grade Presentation

Our Social Studies teacher gave us our biggest assignment since 8th grade will end soon and this assignment is worth a lot of points so I tried my best to make this perfect. It took me around 1 week to create this and present this and I thought it’ll be nice to show it to you because I’m very proud of it.

I made a presentation about Benjamin Franklin using google slides. His biography, information about that time period, and his primary sources need to be included. You also had to include a video, podcast, or an app.

I put the whole presentation into HTML code and put right here:

You can open speaker notes by pressing the cog wheel or pressing “s”


Speaker Notes:

Benjamin Franklin was born on January 17, 1706 and passed away on April 17, 1790. He was one of the Founding Fathers of the United States (A group of leaders who made the new United States upon republican principles). He was a statesman, author, publisher, scientist, inventor, and diplomat. His father, Josiah Franklin, married twice and had 17 children. Franklin launched a hospital, college, and library and he had performed many experiments with electricity and many more projects. As an inventor, he was commonly known for the lightning rod, bifocals (glasses with 2 different optical powers), and many more. He made people understand electricity by saying that it has positive and negative elements. He also negotiated the 1783 Treaty of Paris that ended the Revolutionary War. His education was limited and ended when he was 10 years old, but he was an enthusiastic reader and he taught himself to become a skilled writer.

At age 12 he was apprenticed by his older brother James, a Boston printer. But at age 17 he quit the apprenticeship and became a printer. In 1726, he opened a printing shop, and the business was successful. He created a variety of things such as newspapers, currency, and government pamphlets. In 1748, when he was 42 years old, he retired, and he conducted many experiments to fully understand electricity. He also invented the lightning rod that prevented houses from catching fire caused by lightning. He invented bifocals. In 1766, he traveled to London and testified in the British Parliament against the Stamp Act. In 1776, he helped draft the Declaration of Independence. And again, he negotiated the 1783 Treaty of Paris that ended the Revolutionary War.

In the 1700s, popular entertainment for children would be checkers, kite flying, and tag. For grown-up men, there was a special game called nine pins, played out doors. It’s similar to bowling but the ball and the pins were way much smaller. Quilting was entertaining for women at that time, but the most popular was storytelling and it was a great way to pass time.

For jobs, agriculture and farming were the most popular at that time, but blacksmithing, candlemaking, fishing, and gunsmithing were also popular jobs too.

For food, eggs, bacon and bread, cheese, potatoes, pumpkins, and squash were popular at that time. But seafood, vegetables, and fruits were also common. For fashion: women had stockings, gowns, belts, hoods, capes, and hats. For men there were, shirts, stockings, hats, coats, and breeches. Women wore their hair up in a bun and men braided their hair.

Classical music from Mozart, Beethoven, and other artists was the only music people listened to. But a small amount of people listened to opera too.

JOIN, or DIE is the first political cartoon attributed to Benjamin Franklin. It was designed to unite the colonies and each segment represents one of the Thirteen American colonies or regions. It soon became a symbol of colonial freedom during the American Revolutionary War.

The gulf stream is located along the East coast of the United States. He was interested about the stream because he discovered that the warm surface water of the stream could improve and speed up postal delivery from America to Europe.

He signed the Treaty of Paris, in 1776, he helped draft the Declaration of Independence, he negotiated the 1783 Treaty of Paris that ended the Revolutionary war, and he testified in the British Parliament against the Stamp Act.

He wanted to abolish slavery 1787 and he brought the matter to the Constitutional Convention. And he launched a hospital on May 11, 1751, a college in 1714, and a lending library on July 1st 1731.

Benjamin Franklin returned to Philadelphia in 1726, opened a printing shop, and produced government pamphlets, newspapers, and currency. He also made a coin called the Fugio Cent made from copper electrical parts and it was worth 1 cent. The message “mind your own business” meant “pay attention to your affairs”. The sun and the sun dial represents the word “Fugio” in latin which means I flee or I fly.

He was intelligent because he created the lightning rod, the bifocals, signed many documents, and made many right choices. He was mysterious because he was a member of a secret underground society known as the Hellfire Club. He was determined because he self-taught himself to become a successful writer. He was inventive because he was creative and made many inventions. He was engrossed because he concentrated hard on his experiments.

A virtue is a trait of mind or character that helps us achieve a good life. The app has Benjamin Franklin’s original virtue’s chart to improve your daily conduct. Tap the day’s date to add a mark if you conduct wrong doing on that week’s virtue. The goal is to live and pay strict attention to each virtue without placing any marks on the chart.


Also, a huge thanks to my father who helped me a little bit with the grammar and thank you to my Social Studies teacher that gave me a 10/10.

I’m leaving Facebook for good.

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Notifications, notifications, and notifications everywhere. Not only that, it is useless, a waste of time, and it really doesn’t give me any benefits in my life.

My purpose on Facebook is to share stories about my life but I don’t think Facebook is very suitable for that purpose.

Also, I never felt safe using Facebook because I feel like people could find out your identity and know where you live.

But if you know how to use Facebook the right way it might become a powerful tool, for example, merchants sell clothes and receive a lot of income.

But I’ve decided that I’ll be on Twitter from now on here: https://twitter.com/DanDrak87175557

And leaving Facebook forever because it’s useless for me.

Thank you for reading.

 

No copying content anymore

Hello, how is it going everyone? I hope you had a wonderful month. In this post, I am going to talk about how my blog will change and what will happen to it.

If you have noticed lately I’ve been copying content from other websites and sourcing them. But I guess people could conduct their own research and just answer the questions themselves. So here’s what I’m going to do:

  1. I am not going to copy any content from other websites
  2. I am going to make my own content somehow.

And I am looking forward to doing some more experiments with this website and having fun with it.

A very short post but thanks for reading.

German Shepards or Siberian Huskies?

I hope you guys had a wonderful month and I apologize that I haven’t posted anything I  while. I had so much to do: projects, homework, and stuff like that.

If you know me well, I am a pet lover especially dogs. Dogs are naturally loving and affectionate. Their pack animal nature makes it easy for dogs to develop strong bonds with those they perceive as members of their pack.

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The German Shepherd and the Siberian Husky are my two favorite breeds and they are similar and I am going to compare them. Even though I had a German Shepherd before and I know Huskies pretty well I still had to do some research on this because every dog has a different personality.

Appearance:

The German Shepherd and the Husky have remarkably similar coats.

Both coats are weather resistant and double-layered and they both shed profusely during shedding season.

The German Shepherd has a lean and muscular build with keen eyes and erect ears.

Their fur comes in six colors:

  • Black
  • Black and Silver
  • Black and Tan
  • Red and Black
  • Sable
  • Grey

The Husky is more compact than the German Shepherd, with a more proportionately shaped body.

They have erect ears, a long tail, and expressive eyes that are either blue, brown, or one of each.

The Husky’s coat comes in 13 color varieties:

  • White
  • Piebald
  • Sable
  • Brown
  • Copper
  • Black
  • Black and Tan
  • Splash
  • Red
  • Agouti
  • Black and White
  • Silver
  • Grey

Behavior:

If you’re an energetic family with young children, the Husky might be more suitable. He is playful, energetic, very patient with kids, and would be a good choice for young families on the move. However, make sure you have a flexible schedule or other dogs around to keep your Husky busy. On the other hand, if you are interested in an intelligent dog who is eager to please and can help out around the house, then the German Shepherd is for you. This breed thrives on doggy jobs and loves to be a helpful part of his family unit. However, the German Shepherd has a shorter lifespan and is prone to a few more health issues than the Husky.

Exercise:

Both the Husky and the German Shepherd are active breeds who need lots of exercise and mental stimulation to stay healthy and happy. The Husky is a bit more energetic than the German Shepherd and both of these breeds will need at least an hour or two of exercise every day. On top of that, they need free time to run and play in a securely fenced yard or dog park.

You can also look at this link for a complete comparison chart: https://www.dog-learn.com/breed-vs-breed/german-shepherd-vs-siberian-husky/

I cannot decide which one I like the most, I probably going to go for German Sherpards but let me know in the comments which one you like the most.

Thank you for reading.

Sources: https://thehappypuppysite.com/german-shepherd-vs-husky/

Are Desktop Computers Becoming Obsolete?

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Source: https://www.htxt.co.za/2014/08/19/chart-how-smartphone-vs-pc-usage-has-changed-in-sa-over-the-past-three-years/

The desktop won’t die out for several reasons:

1. It’s becoming the creation tool: particularly for businesses but also for the new breed of home or independent business or artist. People who make things still rely on PCs, be they laptops or desktops, to do so. Graphic design, music, art — all on PCs. Sure, you can do some of this on tablets, but the interface doesn’t support that level of control.

Developers do their work on PCs. I don’t see this changing significantly. Development requires powerful devices — multicore processors, lots of RAM, and copious storage. Developers need giant display screens.

2. Bigger screen and more power: for people who play games on PC’s, a gaming laptop is good, but the issue with gaming laptops is that they run out of battery power quickly due to power the immense power of the CPU’s and GPU’s power requirements, the battery last around 3–4 hours if you’re playing games that need powerful CPUs.

3. you can have a big giant monitor in front of your face if you don’t have a tv and do work, like making a game.

So here’s my opinion: PCs will be with us for many many years to come. But their nature will change so that they’re no longer the only way people consume or create. Marketers need to understand this multi-device future to understand the demands on software developers to support multiple devices. This suggests both market opportunities (help them solve their problems) and a way to market to address customer needs and concerns.

Sources:

https://www.quora.com/Are-desktop-computers-becoming-obsolete-Does-it-make-sense-to-only-own-laptops-and-touch-devices

https://developermedia.com/why-pcs-arent-dead-dying-or-even-terminally-ill/

Why do tuxedos look so good?

tuxedo

To understand this, you have to understand that, no matter how much you want to re-invent the wheel, and try to think about an outfit that objectively will make a man look its best (disregarding of any message of wealth, sprezzatura, laid-backness or coolness he might want to portray with more trendy clothing) you will always arrive at the same point. A man will look his best, when he comes across as slender, tall, with broad shoulders (V-shaped), and his face, the most expressive, humane and important part of the body, in the foreground.

The way a beard (for men), makeup (for women), or a haircut can change the overall perception of your face and its proportions (although the face itself hasn’t really changed) and, thus, making you (appear) more better looking is the same way that clothes can change your body’s appearance without changing the body itself. The tuxedo, or dinner suit, is the modern product of decades and decades of fashion development, evolution, brain-storming, experimenting, and engineering of men’s clothing by the worlds savviest sartorial experts to arrive at an outfit that, per definition, will make a man look objectively its absolute best, independently of actual fashion trends. That is why it’s so classic and so timeless because it relies on pure objective beauty and not on what’s vogue. Every single detail has been thought of, and shouldn’t be changed as it will only mess with carefully engineered refinements.

It works in the following way:

The color black will make one’s figure appear even and, thus, slender and will give a mysterious appearance to the wearer (of course only in the evening/night, where black’s darkness is the richest). To make the man look broader in the shoulders, a V-shaped perception is induced through a big inverted triangle on the torso of the wearer. This is achieved by wearing a white shirt (for the contrast) and a one-buttoned jacket, to make the biggest and longest triangle possible. To accentuate this V, the lapels are covered with a contrasting material (silk, obviously) that accentuates the V-shape even more. To make a man look taller, an uninterrupted and even connection between the legs and the torso is sought, creating an elongated silhouette. This is achieved by covering the waist with a cummerbund or a waistcoat (low cut, otherwise it would break the triangle), avoiding, thus, the white shirt showing below the jacket’s button and breaking the ubiquitous darkness. The last part is to put the face in the foreground, which is done by creating contrast on the white triangle by a black (!) bow tie (and not a normal tie, which would break the triangle), which draws automatically the attention towards it, and imminently, towards the face (colorful bowties would distract the viewer away from the face and don’t create the same effect).

Basically, it comes down to the double V-shape of the lapels accentuating the torso. When fitted right it enhances a man’s posture and creates an illusion of a stronger chest and a slimmer waist.

Other factors contributing are the formal/uniform factor, nice fabrics with classics patterns and exclusive appearances, and that eye-catching examples of suits tend to be made to fit and accentuate all parts of the man’s body (shoulders, protruding bum, leg length, total length.)

A tuxedo makes a man look like a far more decent and respectable human being than maybe he really is.

Typically when a man is wearing a tux, he is also clean-shaven (or neatly trimmed) and has a fresh haircut.

A tuxedo also makes a man look more dashing, handsome, successful and confident.

Tuxes are usually only worn on special occasions, when people are looking (or wanting to look) their best.

Sources:

https://www.quora.com/Why-do-tuxedos-look-so-good-on-men

https://www.quora.com/What-is-it-about-suits-that-make-men-look-attractive

https://www.quora.com/Why-are-females-attracted-to-a-man-in-a-tuxedo

My Certificate Collection

I currently have 3 Certificates and 2 medals but all of them are in Thai language. I was really hoping to join clubs in my school to get more certificates but I was late. All of the clubs were full and the available clubs are just not for me.

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3 Certificates and 2 medals

The leftmost certificate is for getting second in the province of all subjects in third grade.

The next certificate is for getting first in English grammar in the whole province.

The medal is for winning a spelling B in 7th grade. I came out 1 out of 80 contestants and I forgot what the other one is (it was a very long time ago).

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This certificate is from the spelling B

Being Left-handed and Right-handed?

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Ambidexterity is the state of being equally adapted in the use of both the left and the right hand. When referring to objects, the concept indicates that the object is equally suitable for right-handed and left-handed people. Only about one percent of people are naturally ambidextrous.

If you can write equally well with either hand, then you are the one percent. Even among the small population of ‘multi-handed’ individuals, very few experience equal ease and skill with both hands. In comparison, around 10% of people are lefties.

How to get ambidextrous:

Step 1, Day 1 – Practice your handwriting. Write your name and the alphabet, along with a few straight lines and a few circles or curves, all with your non-dominant hand. At first, it’s likely your straight lines will look like bacon strips. But the more you practice, the closer your handwriting with the non-dominant hand will resemble the beautiful penmanship you normally exhibit with your dominant hand. Along with handwriting, try to do a few things consistently with your off-hand. Shaving, putting on makeup … these are things you can work on, but start slowly. You don’t want to wield a razor near your carotid artery with a hand that doesn’t do what you want it to do. Step 2, Day 2 – Brush your teeth with your off hand. When you take a shower, turn on the water, reach for/use the soap, reach for/use the towel, dry off and brush your hair with the non-dominant hand. Put your watch on the opposite wrist. Use your off hand to get food out of the refrigerator. And finally, practice your handwriting again. Step 3, Day 3 – Do everything you did the previous two days with the addition of eating with your off hand. Reach for the milk, handle a fork/spoon, butter your toast, cook, etc., using your non-dominant hand dominantly. A quick tip: Don’t eat in public with your off hand until you’ve practiced a bit. Things could get messy. Step 4, Day 4 – Do everything you did the day before. Now, tie your dominant hand behind your back for a bit to make you do everything possible with the non-dominant hand. Only untie it when driving or doing other things that require the use of two hands. Also, switch your mouse buttons to fit your new practices.

Sources:

https://en.wikipedia.org/wiki/Ambidexterity

http://mentalfloss.com/article/30667/11-facts-about-ambidextrous

https://www.concorde.edu/blog/surgical-technologist-become-ambidextrous

 

Some Short Facts about Thailand

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Thailand and the United States are 2 very different places. Culture, Language, and way of living are very different. I have lived in Thailand for 12 years and only moved to the United States for 5 months because the education is not good enough for me.

Culture:

Thai culture is deeply influenced by religion. With around 95% of the country being Buddhist, the belief system and values of Buddhism play a huge role in day-to-day life. Throughout the country, the most important values that Thai people hold to are respect, self-control, and a non-confrontational attitude.

Language:

Thai is the sole official and national language of Thailand and the first language of the Central Thai people and the vast majority of Thai of Chinese origin. It is a tonal and analytic language. It is a difficult language to learn.

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The Thai Letters

Schools:

Education in Thailand mandates nine years of “basic education” (six years of elementary school and three years of lower secondary school). Education at public schools is free until grade 9. Children are enrolled in elementary school from the age of six and attend for six years, Prathom 1 to Prathom 6.

Expense:

I love traveling Thailand because it’s cheap and backpacking around Thailand usually costs $20–35 USD per day, depending on how much alcohol you consume and how many days you spend on the islands, where costs are higher.

How can pets make you happy?

 

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My old cat, Smoky

 

A pet is good for your heart

High levels of cholesterol and triglycerides can up your risk of heart disease, but owning a cat or dog can lower both, according to the Centers for Disease Control and Prevention (CDC). Owning a cat or dog can also increase your chances of surviving a heart attack.

Pets lower stress and depression

Stroking your cat or dog can lower your blood pressure and make you feel calmer. Even watching fish can ease tense muscles.

Playing with your pet increases the levels of the feel-good chemicals serotonin and dopamine in your brain. Maybe that’s why people recover from a stressful situation more quickly when they’re with their pets than with their partners or friends, a study was done by the National Institutes of Health (NIH) found.

Pets connect you to a community

Dogs, like babies, are conversation starters. On walks, you’re bound to stop for a chat or two with other dog owners.

Pets also give you the chance to meet like-minded owners at the vet, pet store, or training classes.

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My dog, Sally

Pets get you moving

You can’t be a couch potato when you have a dog. Walking a dog regularly means you’re less likely to be obese and more likely to be physically active.

The benefits continue to pay off as you age. One NIH-sponsored study followed 2,500 adults, 71 to 82 years old. The result: Those who took their dogs out regularly had more physical stamina — they walked faster and for longer periods of time and had more mobility inside the house.

Another plus: All that time outdoors increases your vitamin D levels and helps keep your bones strong. Not into dogs? Kitties need exercise, too, so grab a cat toy and have fun.

Pets a source of comfort

Pets can give you love. People may need people to live a richer life, but pets can provide many of the same perks, according to a study published by the Journal of Personality and Social Psychology. Pet owners had greater self-esteem and were better able to bounce back from rejection, the study found. Other studies have found that a pet can be a child’s best buddy and help kids develop empathy.

Sources:

https://www.humana.com/prevention-and-care/healthy-living-and-prevention/emotional-health/pets

 

First Day in a Foreign School

*These are some of my opinions and comments and I am not insulting anything/anyone

School Website: http://www.nhcs.net/noble/


This is the first American school that I’ve been in and I would like to tell my experience to others. I hope you are looking forward to this and I tried to take pictures but it’s hard because there is a rule that you cannot take pictures.

This is Noble Middle School, one of the public schools in Wilmington North Calorina. This school has a very strict policy about bullying, inappropriate content, and profanity. And the school mascot is an eagle.

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Waiting for the school bus

I got into the school in the middle of the semester which is bad because everyone has friends except me. But don’t worry, I’m used to it. At least, I made a couple of friends over there.

I was struggling so much on my first day. It was such a horrible nightmare. I was so scared that I had to ask the school counselor so many questions so many times. The system is very different from Thailand obviously because Thailand schools had no lockers and you do not need to change classes most of the time.

Many of my classmates were afraid to talk to me because they do not know who I am and they didn’t even realize I could speak English. One thing that I remembered is a group of 4 girls gave me a salad in a cup, which is very nice of them because they paid for it. They handed me the salad and then they ran away. I was so scared that I sat there looking at the salad like a mindless person, I threw it away and ran away. But don’t worry, I gave them a quarter and they still talk to me until now.

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The school’s yard

To go to another class, you’ll need to go to the room with the right number. But I couldn’t find the room with that number so I walked around the school like 3 times (and I was terrified) until I found the counselor and she guided me to the correct class.

And that is the first day in an American School and I didn’t study at all (lol).

I remembered myself trying to open a locker. It is hard because I’ve never used a locker before so I had to ask the school counselor many times, but now I know how to use lockers, I just had to practice.


This school is not the “competitive” type which means the students that are behind can catch up easily, but the smarter students (not being narcissistic but like me) they can get bored easily. I know I know, my grades are quite low right now, but I can get them up easily if I stop slacking off.

One thing that is good about this school is that it has no bullies. Not a single bully. This school had only a couple fist fights before but that was a very long time ago.

This is a good school for students who are behind and are sensitive to bullying.

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The important thing to take in that things might not be scary as you think and thank you to the students who accepted me and tried to help me.

And that is my first day in a foreign school.

Paper or Digital?

I rather use paper because I feel much more comfortable and it is easier for me read and some students can process the content better. But some kids are more comfortable with screens.

E-readers appeal by being travel-friendly and storing a whole library at your fingertips, but print books seem to win when it comes to comprehension. Studies have shown that readers often remember more when they consume material in print rather than from a digital source. This is most likely linked to the concept of spatial context, which causes “seemingly irrelevant factors like remembering whether you read something at the top or the bottom of page—or whether it was on the right or left hand side of a two-page spread or near a graphic—can help cement material in mind.”

According to the market research firm Millward Brown, “tangible materials leave a deeper footprint in the brain.” The physical and sequential task of writing letters and words creates a stronger connection with working memory than tapping on a keyboard. The physical representation of written plans and tasks is then perceived as more “real,” which makes them easier to remember. Here are tricks to writing a more productive to-do list.

A UCLA study has shown that manually writing notes with a pen and paper is more conducive to retaining information than typing notes on a laptop or computer. This is because “analog” note takers—those who used a pen and paper—were forced to synthesize lectures rather than merely transcribe everything they heard word for word. Being forced to sort out what was worthy of being written helped to trigger stronger mental processes that promote retention, a phenomenon known as “desirable difficulty.” Additionally, digital note-takers often felt less compelled to study because they felt all the answers were right there on their laptops, and would typically perform more poorly on exams.

Are boys actually better in math?

In preschool and elementary school boys and girls generally perform similarly on math tests. Later in school, in high school and college, more consistent differences start to emerge. In addition, gender differences are often larger among higher-performing students but not necessarily for lower- or average-performing ones. Within this specific group of higher-performing math students, boys tend to perform better. Similarly, when studies do find gender differences among elementary school children, they find these start to appear for higher-performing students earlier in schooling than they do for lower- and average-performing ones.

Whether a gender difference is found also depends on what type of math the kids are doing. In general, boys tend to outperform girls on tests that are less related to what is taught in schools (like the SAT math test, for example) whereas there tend to be minimal gender differences on statewide standards-based math tests, which are more tied to what’s taught in schools. When it comes to grades in school, which are even more closely tied to the curriculum, girls often outperform boys. A recent meta-analysis of research on the performance of students from elementary age through adulthood found boys tend to outperform girls in more complex areas of math such as those involving more advanced problem-solving. In contrast, there are no differences—and, in some cases, an advantage for girls—on more basic numerical skills and on math problems that have a set procedure for solving them

Two of the factors above, age and the type of math, can impact research results at the same time. This could be partially explained by the young age of the sample, and also because there are often few gender differences found in basic numerical skills.

Although there are differences in math performance between girls and boys of both high school and college age, and when doing certain types of math, these studies find only a small gender difference in math performance. The mean performance scores for boys and girls are about 0.1 to 0.3 standard deviations apart from one another—very small differences and with a lot of overlap between boys’ and girls’ math skills. Thus, boys and girls are much more similar than different in math performance, even when considering studies that found the largest gender differences. In addition, even when we find there are differences, it is important to remember they are in the averages of the two groups and are not deterministic of any individual student’s performance.

Interestingly, we often see larger gender difference in other math-related outcomes compared with overall performance. Girls tend to have less positive math attitudes: They have higher levels of math anxiety and lower levels of confidence in their math skills. This means even when girls show similar performance levels to boys, they are often less sure of themselves. In addition, we see larger gender differences in spatial skills, the way students approach solving math problems and math-intensive career choices. Therefore, these math-related skills and attitudes may be more useful areas for researchers to investigate related to gender and math.

Stanford looked at 260 million test scores in more than 10,000 school districts in the United States between 2008 and 2015. Researchers found:

– The math gap between genders has narrowed over the years.

– Boys outperform girls in math only slightly.

– Boys outperform girls in math in wealthy, suburban school districts.

– Girls outperform boys in math in low-income districts only slightly.

– Girls excel in English across all economic groups.

– Wealth likely plays a role in creating gender gaps.

The examples of researches and studies cited above imply that the gender-based gap is only made by the environment rather than the X and Y chromosomes. What is needed at this point is to alter our mindset and discuss how perceived inequality can be eliminated from our society. The first step should be to stop drilling it into the female psyche that they cannot be good with numbers. In fact, parents need to support their girl child and make them believe that math is not rocket science.

Sources:

https://www.scientificamerican.com/article/are-boys-better-than-girls-at-math/

https://www.voanews.com/a/gender-gaps-in-education-are-closing-study-indicates/4486638.html

https://opinionfront.com/are-boys-better-at-math-than-girls

How to write faster by hand

Writing fast gives you many benefits. For example, I’m at school and the teacher told to copy a paragraph from the board, and I copied it pretty quick (Most of the time I write fast and copy everything). So I’ll show you how to write faster with good handwriting.

1. Maintain good posture. Straighten your back and make sure that your feet are resting flat on the floor. Your lower back and hips should be fully supported by the chair that you’re sitting in. Both your knees and your elbows should be bent and you should feel comfortable while you sit. Maintain this posture to reduce fatigue and improve stamina as you write correctly.

  • Maintaining good posture is also beneficial for your back and hips.

2. Hold the pen or pencil properly. The way that you grip your pencil is a big impact on writing speed. When writing, make sure that your hand is in a comfortable position and doesn’t cramp or get fatigued as you write. If it does, consider switching the way that you’re holding the pencil or pen to improve your writing speed.

  • Rotating the paper in a different way may also feel more comfortable for you.

3. Use a pen or pencil that doesn’t require you to press down hard. If you have to press down hard as you write, you will write slower. Find a pen that isn’t so thin that it’s hard to grip, but that isn’t so thick that writing is uncomfortable. That is why I rather use pens than pencils.

4. Write more. Practice every day to improve the speed and the appearance of your handwriting. The more that you do it, the quicker and neater your handwriting will become.

A New Year a New Life

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It is now 2019 which is the starting of a new year and a new life for everyone and tomorrow I’ll be going right to school. And it’s very scary for me because I have no idea what an American School looks like, and I hope my school will go well for me.

But let’s think about the moments that we had in the last year. Leave the bad vibes and only think about the great moments that all of us had.

Alright! Have a nice day and once I settle down in school, I will make more posts.

Peace,

Dan

Thailand to America… A long Journey

I’ve finally got a new home in the USA and North Calorina is a great place to live! Flying from Thailand to America was a very long and tiring journey. My family still haven’t sold our house and so half of the family’s money is over there. And we’re living poor here, but it’s still fun.

We had to fly from my city to Bangkok. Then Bangkok to Hongkong, and Hongkong to Washington D.C. This whole journey took around a week to be in North Calorina. Also, I hate jetlag haha!

Enjoy these photos!

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I can’t do Chemistry Experiments anymore

Ah, the good old days and my craze for science experiments. It was a fun time but I’m starting to lose motivation and I also don’t want to waste money. Since I’m moving to the U.S.A., I had to sell all of my supplies to someone else and if I move there, I’ll need to buy all of my supplies again. I cannot do this hobby because I’m just bored of it.

You might be asking: “Dan, then what are going to post on this blog?”

I’ll be posting about other hobbies and blogging about myself.

Anyways, right now I’m still trying to get to U.S.A and I’ll get back “the WordPress grind.”

Ciao and see you later!

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My old blog header

My best science posts:

1. Does mercury conduct electricity

2. Turning a coin to silver and gold simple redox reaction

3. How to make basic copper carbonate

4. Pouring super glue into borax

Thank you for reading my chemistry posts. It was a fun experience.

I’m moving to the United States in one week…

Hi guys.

I’m sorry that I left this blog for too long and the reason why I didn’t make any posts is because nothing interesting is happening in my life in these couple months.

Nothing much really happened in these months. I grew up a little and I just have a couple of friends on the internet.

And in one week I’ll be moving into the United States and I still haven’t sold my house yet (I do not understand why I can’t sell my house, I think it’s a beautiful house and the price is cheap). And now I’m scared that my family doesn’t have enough money to live in the United States.

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But, I’ll be back to make more posts soon.

I hope you guys are doing fine.

And see you later!

Inconsistency…

Im-Back-e1447780576866Hey guys, I’m back.

I’m sorry for not posting anything for a while

I didn’t have any time to blog because of problems that I had and many other things.

Since my school has changed its time and added more study time, I had to be at school for 9 hours. Yes, 9 hours for the whole of September. And I told them I wasn’t learning anything and I didn’t have many friends, so they decided to take me out of there. And since my father doesn’t have time to teach me, now I have 5 months of free time (Yay)! I really like to blog but I just didn’t have time.

I also have a surprise for you guys in my next post.

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Protecting Iron Nails from Rust

Protecting Iron Nails from Rust

Rust is an iron oxide, a usually red oxide formed by the reaction of iron and oxygen in the presence of water or air moisture. Several forms of rust are distinguishable both visually and by spectroscopy, and form under different circumstances.

Given sufficient time, oxygen, and water, any iron mass will eventually convert entirely to rust and disintegrate. Surface rust is flaky and friable, and it provides no protection to the underlying iron, unlike the formation of patina on copper surfaces. Rusting is the common term for corrosion of iron and its alloys, such as steel. Many other metals undergo similar corrosion, but the resulting oxides are not commonly called rust.

Rust is another name for iron oxide, which occurs when iron or an alloy that contains iron, like steel, is exposed to oxygen and moisture for a long period of time. Over time, the oxygen combines with the metal at an atomic level, forming a new compound called an oxide and weakening the bonds of the metal itself. Although some people refer to rust generally as “oxidation”, that term is much more general; although rust forms when iron undergoes oxidation, not all oxidation forms rust. Only iron or alloys that contain iron can rust, but other metals can corrode in similar ways.

The main catalyst for the rusting process is water. Iron or steel structures might appear to be solid, but water molecules can penetrate the microscopic pits and cracks in any exposed metal. The hydrogen atoms present in water molecules can combine with other elements to form acids, which will eventually cause more metal to be exposed. If chloride ions are present, as is the case with saltwater, the corrosion is likely to occur more quickly. Meanwhile, the oxygen atoms combine with metallic atoms to form the destructive oxide compound. As the atoms combine, they weaken the metal, making the structure brittle and crumbly.

So here are the iron nails that I’m going to be using for the experiment.

One nail is covered in glue, the other is covered in WD-40 (if you don’t know what that is: it’s a penetrating oil and water-displacing spray). And the last one is covered in aluminum foil.

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And I put them in cups of water and waited for 24 hours.

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22 Hours Later: 

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I was really suprised that everyone one of them worked. The nail that was covered in Aluminum foil was completly dry. As you could see I used the method of stopping the water to touch the iron and it worked so well.

Dropping Paper and Copper into Acids

Dropping Paper and Copper into Acids

I was really curious about what would happen if you drop some paper and a weak metal (Copper) into strong acids. I only have 2 acids so that’s all I could do.

Hydrochloric acid:

Paper (A4 70 Grams) :

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The paper started to fizz.

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And after that, it ended and nothing happened. But the paper is mushy and soft.

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Copper:

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Nothing happened with the copper. So I waited for one hour, but still, nothing happened.

Nitric Acid:

Paper:

The same thing happened with the Hydrochloric acid…

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Copper:

The piece of copper dissolved very quickly and created this fumes which I think is called nitrogen dioxide (because of the orange vapor). And after that, there was only a green solution left in the beaker.

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I think the Hydrochloric acid is less stronger than the Nitric Acid.

Thanks for reading.

I’m sorry that this was a short post.

Homeschooling vs. Public School

Homeschooling vs. Public School

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Homeschooling or Public School? I’m really curious which one is better so I’ve done my own research and compare my opinions.

But first, before we begin, I’ll tell you about my history in my school life:

From kindergarten to grade forth, I’ve gone to private school but I’ve never gone to a public school before. And after that horrible school that the teacher gives answers (cheats) on tests, I decided that homeschooling will be the best way. But I lasted only for 4 years because I started to feel lonely. And I decided I will stay in traditional schools forever.

Let’s start comparing:

My opinions:

1. Homeschooling:

It’ll be nice to get away from the distractions (bullies, social media, unsuitable content for kids) and everything is so much easier because you’re at home. No late classes, you can eat anything you want, take many breaks. And the best thing is: you don’t have to pay anything (not for the books, obviously).

But your student will start to get lonely (like me) and will soon to have problems in the future about getting in/along with people.

But that won’t always happen. If your student has neighborhood friends, brothers/sisters, or classmates, your student will be fine. It’s just if you don’t have any friends.

They are still more negative opinions but they’re not as bad as the first one.

2. Public/Private School:

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There’s no difference between these two schools, and they’re pretty much the same.

It’s nice to have friends and be able to practice to live without your parents for a while. But what happens if your kid gets bullied and gets to see unsuitable content? (Note: both of these things will happen, and they happened to me already.)

From researching:

Pros & cons from Homeschooling:

  1. Children have a flexible schedule and are not restricted to the place and time where and when they must study. It allows developing child’s gifts by dedicating more time to enrichment activities.
  2. Such learners obtain real-world experience as they communicate with people working in different fields, of different age, and with different backgrounds. They can be involved in clubs, volunteer organizations, religious communities or try their entrepreneurial skills.
  3. Studying takes place at the learner’s own pace and there is no exhausting homework. On average, homeschool students show 30 points better results than their traditional school peers.
  4. Homeschool kids appear to be more mature in comparison to the school children of the same age. A higher level of discipline and self-organization. Total freedom allows managing time better.
  5. Better family relationships are guaranteed because children spend more time with their family members, communicate and discuss any problems with them. Consequently, relatives become closer to kids and understand them better.

  1. Lack of socializing with peers.
  2. Critical thinking is developed not so well.
  3. Additional money on materials is required.
  4. Being misunderstood by other members of society.
  5. Such kids have fewer friends.

Pros and cons from Private/Public School:

  1. Traditional timetable guarantees that a child will get acquainted with all school subjects beginning with their basics.
  2. The school program is organized in such a way that students get all the necessary skills to be able to live in the modern world analyzing the behavior of heroes and avoiding their own pitfalls.
  3. Children learn to cope with difficulties faced at school themselves, without the assistance of their parents and that prepares them for an adult life.
  4. Teachers offer a variety of learning methods and approaches that will meet the requirements of every child.
  5. Moreover, they have a decent person to take an example of. Public schools are affordable for all kids and parents.

  1. Customary routine does not always allow taking up activities a child would like to.
  2. No motivation to develop.
  3. All the students are placed in the equal positions so more gifted and talented kids have to wait for those who follow behind.
  4. Children are passive listeners and their participation is minimal. Parents are not usually involved in the educational process.
  5. Students make efforts to receive better grades rather than obtain new important knowledge or skills.blog.noplag.com

Conclusion:

I will stick to public/private school for the rest of my life. Since my father is too old to teach me and my mother can’t, and I don’t want to have problems in the future about getting in/along with people.

But I’d say both of the choices are good.

There might be many things I’ve missed, but that’s all I’ve got. If I miss anything, can tell me in the comments.

That’s it! And that’s all I know.

End of the week #3 (My exam results)

 

Alright so my midterm exam results finally came out, and I didn’t do so well.

Here are three reasons why didn’t do well: First, I wasn’t paying attention (I didn’t put effort into getting good grades). Second, I past the 8th grade many times already, and the grades are better than this. And lastly, the test is in a language I’m not comfortable with.

My parents were upset that I got these grades, but I wasn’t sad. Because I didn’t try my best (but they won’t listen to me). Anyway, let’s see the grades:

Math: D 40% (It was in Thai)

Science: C 67.5% (It was also in Thai)

Computer: D 56.67%

History: C 62.5%

Thai language: F 22.5% (There’s nothing I can do)

P.E. B 80%

English Grammar: A 95.5% (Easy)

Social Studies: C 75%


And there they are.

Plus, nothing really happened this week, except for the grades.

I would of gotten better grades if I was paying attention.

Thanks for reading.

 

Here are some tips to past a Test at school

Here are some tips to past a Test at school

Well, it’s back to school, which means it’s back to tests 🙁 Which also might mean it’s back to being stressed out.

Exam

I have already done my midterm exam. If you don’t know what a midterm exam is, it’s an exam given near the middle of an academic grading term, or near the middle of any given quarter or semester.

If you want to pass tests, then try these tips that I always use:

1. Do your homework: Always try to complete all of your assignments, essays, and homework. I just realized that homework was important because the teachers warn the students to finish all of their homework. So try your best to do your homework and you’ll definitely get extra points.

2. Schedule your study time: Trying to fill in all of your studying the night before a test is impossible because you won’t be able to master all of the material, and it also makes you tired on the day of the test. Instead, prepare for a test by scheduling your study time each day for several days before. Trust me, the step is pretty important.

I usually study a day before and a little bit before the test day, and I spend the whole day resting.

3. Use your time wisely: Before studying, clear your desk of electronics and your phone so you don’t get distracted. When hitting the books,  be sure to take a few breaks (not too much though).

4. Form a Study group: Studying with a parent or friends can help you better understand the material and learn from one another. But you have to keep the group small, the larger the group, the more confusion, the more distractions.

I never had a study group before.  I only had a partner, which was pretty good. Many of my classmates recommend this step because it works many times.

5.  Get ready: Sharpen your pencils, grab your pens, and get your bag ready the night before the test. Get a good sleep and eat your healthy breakfast. Now your mind and body is prepared.

You must get your rest. It very important. I didn’t get enough sleep many times and I’m not able to think. So sleeping is very important.

Now you’re ready! Good luck!

Answer sheet

Now, The Test: 

1. Answer the easiest questions first, then the hard ones.

2. Read the instructions and the questions carefully (you might miss something).

3. Guess if you have to (if you’re really stumped).

4. If you start to feel stressed, remember to breathe deeply and relax.


I hoped this will help the students out there and good luck!

 

 

End of the week #2

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Hey guys,

Nothing really happened this week. But I did took the midterm exam in the school, and I think I did pretty well. I don’t know when I’m going to see my result, but I’m sure it’s going to be soon. I didn’t have time to make any posts because the test interrupted me.

The English grammar and science were easy. The math was a little difficult because the questions were in Thai and I don’t quite understand them. The rest of the subjects were way difficult (because they were in Thai).

And that’s pretty much it.

Actually, school isn’t bad as I thought, because some people are still talking to me. But school is still pretty boring because I don’t like the activities.

That’s all for now and I’ll see you guys later!

 

 

End of the week #1

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Hey guys!

I’ll be making new posts that will be called “end of the week” every Sunday. And the posts are going to be about what I’ve learned in the week, and what will happen next week. So it’s basically like a diary.

Alright, let’s begin:


About my school, I hate it. No friends, boring activities, 9 hours of studying every day.

Studying isn’t the issue here, it’s about time. It’s really difficult to survive when you have no friends. I do not know why no one wants to talk to me. But anyway, I have to deal with that myself.

Two days ago, my father told me that my mom’s visa to move to America (we’re trying to move to America) will be coming in November and I must finish eighth grade in my school that I hate…

I will get horrible grades since I’m not good at the Thai subjects.

So I have to stay in that school for another long long time.

“Ugh, 5 days per week of nothing to do. Just thinking of it makes me don’t want to go to school.”


About this blog is good news: I’ll make 5 posts on Saturday and Sunday, then I’ll post on the weekdays.


So that’s pretty much it. And the school is really annoying–that’s my conclusion.

The end…..

Mercury Compared to Water

Mercury Compared to Water

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This is going to be a short post because I’ll be comparing Mercury to Water. I’ll be trying to find out why mercury is 14 times denser than water:

I poured all of my mercury into a petri dish and I have 22.70 grams of it. So I added the same weight of water into a petri dish and weighed it.

And after that, I pour the mercury and water into beakers to measure them.

There are 1.6 ml of mercury and 22 ml of water. That explains why mercury is 14 times denser than water (22 ÷ 1.6 = 13.75 ≈ 14).

Here are some more comparisons:

 Mercury  Water
Color  Metalic Silver  Clear/Transparent
Density  13.534 g/cm3  1 g/cm3
Conductivity  High  Medium
Toxicity  High  None

 

Pouring Super Glue into Borax 1

Pouring Super Glue into Borax 1

Everyone has heard about slime from school glue.

But I was thinking what would happen if you use superglue instead of just regular school glue.

Glue has long flexible molecules in it called polymers. These polymer molecules slide past each other as a liquid.

Borax in water forms an ion called the borate ion. When the borax solution is added to the glue solution, the borate ions help link the long polymer molecules to each other so they cannot move and flow as easily.

When enough polymer molecules get hooked together in the right way, the glue solution changes from being very liquidy to a rubbery kind of stuff that we call slime.

I was thinking what would happen if you replace superglue instead of just regular school glue.

So here I have a 2% borax solution by adding 2 grams of borax into 200ml of water:

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Now I’ll put one drop of superglue into the borax, just to see what happens.

The drop of super glue has turned into jelly. Now let’s add more:

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The same thing happened. Then I decided to take it out with forceps:

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The superglue instantly dries when it touches the air.

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After that, I decided to put a teaspoon of borax into the solution and poured more superglue.

It dried up in the solution fast. I took the chunk of superglue out to inspect it. The superglue felt like hard foam. I pinched it with my hand, there are still some superglue that hasn’t dried inside since the borax can’t touch it.

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That’s it! I think the experiment was too quick, and a little sloppy so I’ll try this experiment again and I’ll do a better one sometime later.

Also, I’m going to write a scientific report after every and each chemistry experiment. But this one is a little too short so I’m not going to write anything.

And that’s all for now!

Sources:

 

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I’m going to make more posts

Hello Everyone!

Today I’ll tell you the reason why I went away for a long, long, long time. Here’s what happened:

I’ve finally went to school and I never had time to do any more experiments and posts.

I learned so many things in these months.

Everything was going well, but then one I felt terrible. I felt really lonely and I’m not able to get along with people So my parents decided for me to go to school, but I said no because I thought I won’t have friends. I felt worse every day, so I went to a physiatrist and he said to go to public/private school or do some activities. I’ve finally went to school because I feel so lonely (and everybody said so).

I was really scared on the first day of school since I haven’t gone to a private school for a long long time (3 years). My class has 22 girls, 11 boys, and a nice teacher. This teacher was the best teacher I’ve ever seen (ever!). She always helps me when I need help (about friends, not studying), and she always moves the students’ places around the room.

Another positive thing is that I get to get on stage in front of everyone since my grammer is very good.

After those few weeks, things are much better now. But there are still some sad moments though… So that’s my school story.

The End.

Hope you learned more about me, and I’m sorry for leaving this blog for too long

How to make Rochelle Salt (Potassium Sodium Tartrate)

How to make Rochelle Salt (Potassium Sodium Tartrate)

Rochelle Salt (Potassium Sodium Tartrate) a crystalline solid having a large piezoelectric effect (electric charge induced on its surfaces by mechanical deformation due to pressure, twisting, or bending), making it useful in sensitive acoustical and vibrational devices. In 1824, Sir David Brewster demonstrated piezoelectric effects using Rochelle salts, which led to him naming the effect pyroelectricity.

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Materials + Methods:

Materials + Methods that I used:

  • 2 50ml beakers
  • alcohol lamp and stand
  • Glass stir rod
  • Funnel
  • Filter paper or coffee filter
  • 5 g Potassium bitartrate (also known as cream of tartar)
  • Sodium carbonate (also known as washing soda)
  1. Fill the 50 ml beaker 5 ml with water. Add 5 grams of potassium bitartrate one at a time, and stir.
  2. Using the alcohol lamp, heat just until it boils, stirring constantly.
  3. Remove the beaker from heat and turn off the lamp.
  4. Add heaping scoops of sodium carbonate, stirring in between. The solution will fizz. Repeat until no more bubbles form upon addition of sodium carbonate and the solution is clear.
  5. With a hot pad and an adult’s help, pour the hot solution into the 250 ml beaker. Use a filter-paper-lined funnel. This step takes some time. If the solution begins to cool and crystals form and clog the filter paper, simply reheat the solution and pour again.
  6. Place it in the refrigerator, uncovered. Within a few hours, crystalline Rochelle salt (potassium sodium tartrate) will have begun to form. Leave it overnight.
  7. The next day, carefully pour off the remaining solution and use a spatula to transfer the Rochelle salt onto filter paper to dry so you can examine it.

Original Method:

  1. Fill the 600 ml beaker to the first line (~25 ml) with water. Add 10 heaping scoops of potassium bitartrate one at a time, and stir.
  2. Using the alcohol lamp, heat just until it boils, stirring constantly.
  3. Use a hot pad and adult’s help to remove the beaker from heat and turn off the lamp.
  4. Add heaping scoops of sodium carbonate, stirring in between. The solution will fizz. Repeat until no more bubbles form upon addition of sodium carbonate and the solution is clear.
  5. With a hot pad and an adult’s help, pour the hot solution into the 250 ml beaker. Use a filter-paper-lined funnel. This step takes some time. If the solution begins to cool and crystals form and clog the filter paper, simply reheat the solution and pour again.
  6. Place it in the refrigerator, uncovered. Within a few hours, crystalline Rochelle salt (potassium sodium tartrate) will have begun to form. Leave it overnight.
  7. The next day, carefully pour off the remaining solution and use a spatula to transfer the Rochelle salt onto filter paper to dry so you can examine it.

Results:

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The salt white, but if you want to make the crystal, it’ll a lot harder. My solution is not water clear, I still have impurities, it also may appear a little strange since it has a higher refractive index and is light polarizing. To purify further: simply grow the crystals again with another salt solution. I agree with myself that this experiment is hard.

Sources:

Methods: https://learning-center.homesciencetools.com/article/how-to-make-rochelle-salt-science-project/

https://www.britannica.com/science/Rochelle-salt

https://en.wikipedia.org/wiki/Potassium_sodium_tartrate

https://mistralhowto.wordpress.com/tag/uses-for-rochelle-salt/

Methods: http://www.instructables.com/id/Make-Rochelle-Salt/

How to Calculate Molar Mass

How to Calculate Molar Mass

Moles are a unit of measurement of chemicals. A mole is the atomic weight of a molecule of the chemical in grams and it is used very commonly in chemistry, so I’m going to show you how to calculate molar mass.

You can find the molar mass right on the periodic table. On the table, there is the element symbol, the atomic number, and the molar mass.

PeriodicTable-56a128ab5f9b58b7d0bc938c

Here I’ve got some elements:

 

Nitrogen’s molar mass is 14.0067 g/mol, for oxygen, it’s 15.9994 g/mol, and for silver, it’s 107.8682 g/mol.

The first method of finding the molar mass is to look right on the table (just like I did).

The second method is to add up the masses of each atom (.Add up the masses of the atoms that form the compound) I’ll show how with the chemical silver nitrate.


AgNO3

One Silver molecule: 107.8682 + one Nitrogen molecule 14.0067 + and three molecules of Oxygen: (15.9994 x 3)

107.8682 + 14.0067 + (15.9994 x 3) = 169.8731

AgNO3 = 169.87 g/mol


Let’s try another one:

NaOH

One Sodium molecule: 22.989769 + One Oxygen: 15.9994 + and one Hydrogen: 1.00794

22.989769 + 15.9994 + 1.00794 = 39.997 g/mol

NaOH = 39.997 g/mol


H2SO4

Two Hydrogens: (2 x 1.00794) + One Sulfur: 32.07 + Four Oxygens: (4 x 16.00)

(2 x 1.00794) + 32.07 + (4 x 15.9994) = 98.079 g/mol

H2SO4 = 98.079 g/mol


 

I hope you understand, leave a comment if you have any questions or if there are any mistakes ↓

 

Sources:

http://www.qrg.northwestern.edu/projects/vss/docs/propulsion/3-what-is-a-mol.html

https://www.youtube.com/watch?v=F9NkYSKJifs

I’m Back!!

It’s already turning to December, but I didn’t do anything! (I was gone for a month).

But now I’m back to make more posts!

Nothing much happened in this month, I really don’t have much time for my blog left since I go to the gym. My dad gave me twice of school work because the gym is in the morning and I’m tired in the afternoon (too tired to study). So I need to give more work to myself on Friday, Saturday, and Sunday. But don’t worry, I went nonstop studying in the middle of nights and now I have less work.

Anyways, I’ll be making more posts soon.

Bye for now!

 

 

How to make Basic Copper Carbonate

How to make Basic Copper Carbonate

Sometimes, I’m missing a couple of chemicals. The way to fix that problem is simply ordering them online, but I need it right now. So I decided to make my own chemicals by following procedures from the internet. For the first one, I’m going to be making basic copper carbonate (CuCo3).

First, I added about 85 grams of copper sulfate to a flask (I didn’t know why I put 86 g).

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After that, I added 240 ml of distilled water and tried to dissolve all of the copper sulfate. And then, I put 30 grams of sodium carbonate into 60 ml of distilled water and did the same.

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Next, I poured the sodium carbonate solution into the copper sulfate solution slowly and carefully. There were lots of fizzing and bubbles. What’s happening is: CuSO4 (Copper Sulfate) + Na2Co3 (Sodium Carbonate) + H2O → CuCO3 (Copper Carbonate) + Na2SO4 (Sodium Sulfate) + CO2

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I added all of the sodium carbonate, and waited for one night to make the copper carbonate settle to the bottom.

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After that, I filtered all of the copper carbonate out and let it sit for 2 days (to dry it).

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All of the copper carbonate is dried.

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I’m actually impressed. I put it in a bottle and labeled it.

Well, I would have to thank the person in that video. The color and the texture of the chemical seems to be correct. I can use this chemical!

I hoped you enjoyed. Any suggestions? Feel free to comment down below ↓

Revealing Fingerprints With Silver Nitrate

Revealing Fingerprints With Silver Nitrate

Another Method from the same chemistry book.

Weigh 0.3 grams of AgNO3.

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And pour it into 10ml of distilled water.

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I sprayed it and I shone it with an LED lamp (a UV lamp is better).

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Now I got this:

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I didn’t know why it was a line like that, but it worked.

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I didn’t find any other fingerprints and the fingerprint that I have is hard to see.

Well, this experiment is considered as a fail. I rather use the iodine fuming method that I used the last time. The silver nitrate reacts to the salt on the fingerprint and produces silver chloride, just like on the skin.

 

How to Reveal Fingerprints With Iodine Crystals

How to Reveal Fingerprints With Iodine Crystals

Fingerprints on glass, metal, and other surfaces can be revealed by dusting them with powder. I tried it twice already but it was very hard, so I found this method in my chemistry book.

Position the paper in the beaker like this:

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And put a gram of iodine crystals, that should be enough. It was already reacting and making stains. But It stopped, so I turned on the heat. About 10 seconds, vapors are forming quickly. (Becareful, if you wash your hands before touching paper, it’ll not work. Sweaty hands will work. Soap removes all of the oils and salts on the fingers.)

I love the vapors, it looks so beautiful.

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Here’s the paper:

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I’m actually quite surprised that it worked so well! Definitely better than using powder.

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It so clear that you could see it! But I had another idea. What would happen if I sprayed a little bit of cornstarch? Starch will turn iodine into an intense “blue-black” color (iodine-starch reaction). So I added a gram of cornstarch into 20 ml of water and put it in a spray bottle.

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It works, but I didn’t spray more because the prints are already clear 🙂

How it works? Very simple. Iodine fuming was the first method to reveal fingerprints on surfaces. As the iodine is heating, purple vapors start to form. The iodine condenses to a solid and sticks fast to oils present in fingerprints, and of course, it reveals the fingerprints.

I hoped you enjoyed. This is now one of my favorite experiments.

Making a Mercury Switch

Making a Mercury Switch

Remember that experiment about mercury? I tried to show you that mercury can conduct electricity. And it did. I studied it a little bit more and I found this:

A Simple (Tilt) Mercury Switch:

Mercury_Switch_without_housing

It’s similar to the one we did the last time. Instead of tilting it around, what if you suck the mercury in and out. Isn’t that better? I’ll try to build one just for fun.

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I made a hole in a little container (what don’t know what to call it) and put a syringe in there. Then, I poked holes in the bottom and glued 2 wires in, and poured the mercury in.

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Mercury sucked:

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Works pretty nicely. I hoped you enjoyed!

Making Naphthalene Crystals

Making Naphthalene Crystals

I realized that time passes so fast, it was about a week since I made a new post. I feel like it has been for only 3 days. Anyways, let’s get started with the post.

I’ll try to make Naphthalene crystals. Naphthalene is a white crystalline solid with a characteristic odor. It’s melting point is about 80°C. If you leave it to expose air, it’ll change into a gas.

My Naphthalene:

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I put about 7 balls of Naphthalene into a 600 ml beaker, and I put a flask with cold water on top of it.

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The Naphthalene is vaporizing quickly. The vapors will get in contact with the cold water in the flask and turn back into a solid.

Crystals are also forming in the beaker, because it’s touching the cold air outside, just like what’s happening in the flask.

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All of the Naphthalene has changed into liquid, it was boiling a little too fast so I stopped the heat.

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The crystals are so fragile so I used a trash bag to make the crystals fall onto it.

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Here are the crystals. They look like fern leaves and snowflakes! But I wish the crystals were chunks, not thin like this. I looked in the internet for pictures of Naphthalene crystals, and they’re just like mine. The reason that it’s yellow is because the light is just reflecting it.

Here’s the beaker:

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I hoped you enjoyed the post, if you did, drop a like down below ↓

Cleaning My Laboratory Sink

Cleaning My Laboratory Sink

I think today is the time to clean my sink. I can’t have a dirty sink; If I have one, I’m going to turn into a sloppy chemist. Being clean and neat in life brings success to you (that just means being clean is good).

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Here’s my dirty sink, tons of stains in there.

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Before I had this sink, I had to use the kitchen sink. My mom didn’t like the chemicals contaminating the kitchen, so my dad bought this sink for me. My dad almost bought a bathroom sink (the white ones), but they’re expensive so he bought this for me. If I had a bathroom sink, I won’t make this post (because I’m embarrassed).

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This is a mess…

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I don’t know why I’m posting this though…

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After a little bit of scrubbing, the sink is good as new. There’re still some stains but I can’t clean them. The way that home chemists dispose their chemicals is to wash it down with a lot of water. But the most important thing is the sink is clean.

“A clean room, a clean mind” – Danupon Drake

Turning a Coin to Silver and Gold (Simple Redox Reaction)

Turning a Coin to Silver and Gold (Simple Redox Reaction)

combine

This simple experiment will make you understand the redox reaction. This is one of my favorite experiments so I decided to make a post about it.

Things you’ll need: a copper coin (a penny, basically), zinc powder, sodium hydroxide (more than 50%), alcohol lamp, forceps, and a beaker.

  1. Pour Sodium Hydroxide into a beaker and pour some zinc dust in it, enough to cover the coin.IMG_20140101_092241
  2. Put the coin the beaker and wait for a couple hours, I’ll be using my country’s copper coin.

     

  3. Take the coin out with forceps and wash it with water, now you have a silver coin.IMG_20140101_094157
  4. If you want to continue, do the following steps: Make sure the coin is dry. Heat it up with an alcohol lamp until it’s yellow.IMG_20140101_094250
  5. Enjoy.IMG_20140101_094758

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two chemicals. A redox reaction is any chemical reaction in which the oxidation number of a molecule, ion, or atom changes by losing or gaining an electron. For example, like this experiment, the zinc transferred its ions to the copper; that’s how the coin turned silver, and that’s why this is a redox reaction. What about turning it to gold? The color of silver and copper are just mixing together when heated and that makes the gold color.

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Do Water Vapors Effect the Mass of Copper (II) Sulfate?

Do Water Vapors Effect the Mass of Copper (II) Sulfate?

The pentahydrate form, which is blue, is heated, turning the copper sulfate into the anhydrous form which is white, while the water that was present in the pentahydrate form evaporates. I wanted to know if water vapors affect the mass of copper sulfate.

Things you’ll need: crucible, balance, Copper (II) Sulphate, spoon, alcohol lamp, and stand.

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  1. Weigh the crucible and tare it. After that, put 5 grams of copper (II) sulfate into the crucible. My crucible weighs 50.41 grams as shown on the bottom.IMG_20140101_133307IMG_20140101_133513
  2. Warm it up until it turns whiteIMG_20140101_134156
  3. Let everything cool off and weigh the crucible.

I had an error during this experiment… The balance’s batteries are out… So I had to take the copper sulfate out and reweigh the crucible. One of my epic fails…

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Crucible: 50.41 grams

Copper (II) Sulfate: 5.00 grams

Anhydrous Salt: 3.43 grams

Mass loss: 1.57 grams

I pour in some water to get to the original mass, and it appears that I poured in about 1 and a half ml of water.

Hope you enjoyed, if you did, drop a like down below ↓

Does Mercury Conduct Electricity?

Does Mercury Conduct Electricity?

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I bought this from my science shop yesterday so that I could perform more experiments.

Why is it a liquid?

The reason for mercury being a liquid is complex. It is heavy; a chunk of iron can float on mercury. Compared to other metals, it does not conduct heat well. However, it conducts electricity fairly well.

Mercury is the only metal that is a liquid at normal temperatures and pressure. What makes mercury so special? Basically, it’s because mercury is bad at sharing… electrons, that is.

Most metal atoms readily share valence electrons with other atoms. The electrons in a mercury atom are bound more tightly than usual to the nucleus. In fact, the s electrons are moving so fast and close to the nucleus they exhibit relativistic effects, behaving as if they were more massive than slower-moving electrons.

Why does it conduct electricity?

Mercury is a liquid metal. As with all metals, the outer electrons are detached from the nuclei and form a kind of “sea of electrons” in which the rest of the atoms sit. A small electrical force, in other words a voltage, placed across any two points in this sea will make the electrons move, and that constitutes a current and makes a metal electrically conducting.

I wanted to see that mercury can conduct electricity. I opened mercury bottle, it has an inner closure, I’m not going to take it out because we need it.

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I’m going to put pins in it.

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I will flip the bottle and the mercury will be in contact with the pins and the circuit will turn on.

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It works nicely!

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This chemical will go into my favorite chemical list!

https://www.quora.com/Why-does-mercury-conduct-electricity-so-well

https://www.thoughtco.com/why-is-mercury-a-liquid-608454

Copper Plating: Part #1

Copper Plating: Part #1

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I’ve never used a copper stick in one of my experiments, I found out that I’m good at plating, which is what we’re going to be doing in this post. You probably wondering why my copper is a green, it’s because of chemical reactions with the elements. Just as iron that is left unprotected in the open air will corrode and form a flaky orange-red outer layer.

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First, warm up some distilled water, which is what I’m doing above. Heated up until about 45°C. Don’t go too hot with the water because it’ll accelerate the plating and form crystals, which is what we don’t want.

To be honest, I’m not actually following any instructions though, so I’m not sure if this is going to work.

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Mix the distilled water with scoops of copper sulphate, I don’t know how much to put in there, so I put about… 100 grams I guess.

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What I’m going to be plating is this iron nail. I connect the nail to (-) and the copper to (+). What’s happening now is simple: the copper ions (+) is charging to the metal. Copper (which are positively charged) are attracted to the negatively charged iron electrode and slowly deposit on it—producing a thin layer of copper plate. The electrolyte just helps ions to move around.

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I shook the nail around because the copper will only go to one side.

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Now the nail is all covered in copper but…..

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The copper is falling off, easily…

I tried with a stick that metal and some aluminum mixed in it. But it still falls off.

The common problem is the electrolyte, as said above it accelerates the plating and makes crystals, but the water is about 35°C. Or the other problem is too much copper sulfate…

Can you tell me what the problem is? If you know, comment down below↓

Warm Chemistry

Warm Chemistry

After that long break, I would like to do a very simple experiment to start. This one is pretty common, most people probably know this experiment, but no one realized that there was more to it.

Things you’ll need: Yeast, hydrogen peroxide, a beaker, and a thermometer.

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  1. Pour 200 ml of hydrogen peroxide into a beaker.IMG_20140101_070545
  2. Insert the thermometer and look at the temperature.IMG_20140101_070613
  3. Add some yeast, not too little, stir it into the hydrogen peroxide.IMG_20140101_070705
  4. Keep waiting, the temperature will be high.IMG_20140101_070056

My temperature is about 63°C. That’s very hot. You saw the temperature change. The energy in the chemicals was converted to heat energy by the chemical change. You must know the yeast + H2O2 reaction, so I’m not going to explain it. This is also another way to create the elephant’s toothpaste demonstration.

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Thanks for taking your time to look at this post 🙂

What is Silica Gel?

What is Silica Gel?

Silica gel is a granularvitreousporous form of silicon dioxide made synthetically from sodium silicate. Silica gel contains a nano-porous silica micro-structure, suspended inside a liquid. Most applications of silica gel require it to be dried, in which case it is called silica xerogel. For practical purposes, silica gel is often interchangeable with silica xerogel. Silica xerogel is tough and hard; it is more solid than common household gels like gelatin or agar. It is a naturally occurring mineral that is purified and processed into either granular or beaded form. As a desiccant, it has an average pore size of 2.4 nanometers and has a strong affinity for water molecules.

This is how it looks like (I got this one from a medicine bottle):20170831_141218

Silica gel is most commonly encountered in everyday life as beads in a small (typically 2 x 3 cm) paper packet. In this form, it is used as a desiccant to control local humidity to avoid spoilage or degradation of some goods. Because silica gel can have added chemical indicators and absorbs moisture very well, silica gel packets usually bear warnings for the user not to eat the contents.

Because Silica gel is non-toxic, non-flammable, and non-reactive and stable with ordinary usage. It will react with hydrogen fluoridefluorineoxygen difluoridechlorine trifluoride, strong acids, strong bases, and oxidizers. Silica gel is irritating to the respiratory tract and may cause irritation of the digestive tract, and dust from the beads may cause irritation to the skin and eyes, so precautions should be taken.

Silica gel’s high specific surface area (around 800 m2/g) allows it to absorb water readily, making it useful as a desiccant (drying agent). Silica gel is often described as “absorbing” moisture, which may be appropriate when the gel’s microscopic structure is ignored, as in silica gel packs or other products.

An aqueous solution of sodium silicate is acidified to produce a gelatinous precipitate that is washed, then dehydrated to produce colorless silica gel. When a visible indication of the moisture content of the silica gel is required, ammonium tetrachlorocobaltate(II) (NH4)2CoCl4 or cobalt chloride CoCl2 is added. This will cause the gel to be blue when dry and pink when hydrated. An alternative indicator is methyl violet which is orange when dry and green when hydrated. Due to the connection between cancer and cobalt chloride, it has been forbidden in Europe on silica gel.

Once saturated with water, the gel can be regenerated by heating it to 120 °C (250 °F) for 1–2 hours. Some types of silica gel will “pop” when exposed to enough water. This is caused by breakage of the silica spheres when contacting the water.

Now let’s play with it.20170831_141919

I got these from two packets, that’s why there’s so many.

I put about 5 ml of water into this little graduated cylinder. After that, I poured the gel in there and wait for a couple minutes.

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Time to measure the water.

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Look at that, the water went down about 1.4 ml. It actually absorbs water. I wish I could weigh the gel though.

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Did you learn anything? If you did, drop a like below ↓

Sources:

https://en.wikipedia.org/wiki/Silica_gel

4 Science Books you Should Buy

4 Science Books you Should Buy

Want to be an expert in doing science experiments? Want to study science? Then these are the science books you should take a look at. I use these books a lot and they’re very very helpful. So let’s get started.

4. Illustrated Guide to Home Biology Experiments: All Lab, No Lecture

Want to be an expert in using a microscope? Then this one is for you! It’s mostly about microscopes, but there’re some other things in there.20170829_13590520170829_13591420170829_135934

PDF: http://www.thehomescientist.com/manuals/Illustrated_Guide_to_Home_Biology_Experiments.pdf

3. The Annotated Build-It-Yourself Science Laboratory: Build Over 200 Pieces of Science Equipment! (Make)

Want to start a home laboratory from scratch? Wanna make DIY science equipment?Then this one is for you. Build every science equipment! Build: a carbon arc furnace, cloud chamber, mechanical stroboscope, microtome, and so many others! This book was originally published in 1963!! It’s awesome, believe me!20170829_13562520170829_13565620170829_141919

Don’t want to buy the book? Download the PDF: http://www.ebook777.com/make-annotated-build-science-laboratory/

2. Illustrated Guide to Home Chemistry Experiments: All Lab, No Lecture (DIY Science)

Want to be an expert in using chemistry equipment? Trust me you’ll turn into an expert after you read the whole book! This book has: a guide on setting up a home laboratory, experiments you can try, and scientific principles.

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PDF: https://zookeepersblog.files.wordpress.com/2016/03/illustrated-guide-to-home-chemistry-experiments.pdf

1. The Science Book: Everything You Need to Know About the World and How It Works

This is the best. You don’t the internet to find something if you have this book.

This book has everything you need to know, about the world, about everything! If you knew everything in the book, you’re a genius. There is so much to learn in the book. It has everything about science. It’ll take me forever to learn everything in this book! Trust me, if you want to know about the world, then this is for you.

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You need this: https://fy45g7645f5uggu45.files.wordpress.com/2017/07/the-science-book-everything-you-need-to-know-about-the-world-and-how-it-works.pdf

Hope you enjoyed the post and Do you think these books are good? Let me know in the comments↓↓

Rehydrating Copper (II) Sulfate

Rehydrating Copper (II) Sulfate

Someone gave me an idea and I want to do it:

Screenshot (80)

See what he said? Let’s follow him.

The last time we used test tubes and destroyed all of them! So I’m going to use a beaker.

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I put the copper sulfate in it and going to burn it.

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It’s white now. I’ll drop water on it.

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It worked!

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I’m guessing that it works like this: I took the water molucles out by evaporating the water, now I have this white dust without water in there, and when I added the water, it turned back to blue (it’s like adding the water molucles back to it). This is why I love chemistry. It’s so awesome!

Melting #4: Testing the Liquid

Melting #4: Testing the Liquid

In the last time: I extracted water from Copper (II) Sulfate, and I would like to test it. What I would like to know is: can we drink it. Let’s find out.

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The liquid

I didn’t use a rubber stopper to close the test tube because the new test tubes didn’t fit it. At least, I can close it with a tissue.

 

The first thing that I always do when I test liquids is to check the PH.

A better tool for this task is a PH meter, but I don’t have one. So I have to use the old-fashioned litmus paper.

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The left piece of paper is the liquid that we’re testing now and the right is drinking water from bottles (not tap water). And on the top is a chart of what the litmus paper is indicating. Looks like the liquid is acidic and the drinking water is about in the middle.

It smelled like plastic when I smelled the liquid, I’m guessing it’s because the rubber tube that I used is heated and the plastic smell comes out.

After that, I thought about PH indicators. I used Phenolphthalein, Bromothymol blue, and Methyl orange. Phenolphthalein is colorless from 0 PH to 8.3 PH, Bromothymol blue will be yellow from 1 to 6 PH, and Methyl orange is red from 1 to 3.1 PH.

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Well, I guess you can’t drink it. I thought that I could manufacture water from it.

Thought it will work but I guess the only place you could obtain water is from nature 🙂

Melting #3: Liquid from Copper (II) Sulfate

Melting #3: Liquid from Copper (II) Sulfate

Well, the last time, we tried to melt copper (II) sulfate, and it didn’t work at all. But there’s this water vapor from it:20170808_164631

What I wanted to do today, is to extract the water out of it and test it. It loses two water molecules when heating at 63 °C (145 °F), two more at 109 °C (228 °F), and the final water molecule at 200 °C (392 °F). What are we waiting for? Let’s get started!

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OK, I’ve setup this apparatus to extract the liquid. On the top left is the copper sulfate in a test tube. I’m going to heat it up and water vapor will go into the plastic tube and go into the test tube.

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Turned on the heat and we just need to wait.

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Yay! it’s working!

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There is so much water coming in!

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I turned off the heat because most of the water is extracted, I’m going to put some more in there.

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I added a new load of copper sulfate to get more liquid, but… the test tube….

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I added some cold water in the beaker on the test tube that’s receiving the liquid because I think that using a cold temperature will turn the water vapor into drops of water before the water vapor escapes from the test tube.Water vapor turns into liquid droplets when cooled. That is called condensation, it’s the opposite of evaporation. Let’s see if this works.

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All right, finished. I think the second method works better. And the best thing is: we got some liquid! I’m going to make a separate post about testing this liquid.

But… the test tube… It’s gone…

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R.I.P

It’s sad to see death…

Good bye.. Last test tube…

Don’t worry, I’ll buy new ones 😃

I Found the Answer

I Found the Answer

Finally, I found what this is:

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I cracked one of the tiny stones and the inside was black:

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I guess the color has been covered by some other minerals or the color on the outside has been changed from weathering. Remember, the color of magnetite is always black.

Also, I did the streak test. The “streak test” is a method used to determine the color of a mineral in powdered form. The color of a mineral’s powder is often a very important for identifying the mineral. The streak test is done by scraping a specimen of the mineral across a piece of unglazed porcelain known as a streak plate. I don’t have a streak plate so I used a scalpel to scratch it and the dust is black. The color of the dust must be black as well.

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Today, magnetite is mined as iron, that means I can claim that this is iron.

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Well, another mineral is added to my collection. Just a couple more to go and this collection will be finished.

 

How to get rid of flies in your house

From Indianes Kitchen.

Go visit the link on the bottom of this post. It will tell you how.

Don’t you hate that time of the year when the Fruit Flies invade your kitchen? Landing on your food is disgusting! It seems like they are everywhere and you can’t get rid of them! You won’t get rid of them completely unless you throw out your ripe produce or put the ripe produce in the […]

Visit the full post here:

Fruit Fly Solution — In Dianes Kitchen

What Happened to the Sulfur Coin? (Sulfur science and can the coin melt again?)

What Happened to the Sulfur Coin? (Sulfur science and can the coin melt again?)

The coin:

Now, what happened to that coin? It was 10 days since I made it, and I wanted to show you what happened. Here’s the coin:20170815_174126

The coin has turned white and it came apart into a couple pieces… I guess it’s useless now, but I was wondering, can I melt it again? Let’s try it.

Can we melt it again:

Yes! Look at this:

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It’s melting just fine. It started melting in ten seconds (very quick). I’m guessing you could melt it as many times as you want just like the other metals.

Sulfur Science:

Why does yellow sulfur turn black when heated?

The internal structure of sulfur changes under heating. From stable at room temperature crystalline form of yellow color it turns into its plastic form, which has no specific internal structure. This changes the color of the substance: initially yellow sulfur becomes red-brown, and then black.

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When heated above 119oC sulfur crystals melt and form a reddish-orange liquid, also consisting of S8 molecules. At temperatures even higher the sulfur ring molecules break, forming “strings” of atoms linked with one another. Exactly the occurrence of linear molecules makes molten sulfur black. These “strings” can bond their free ends to each other, forming very long molecules. As a result, the liquid sulfur thickens due to the “clumsiness” of large molecules. They can be compared to threads: the greater their length, the easier they get tangled with each other. If the black viscous liquid is heated to 187oC, it will become maximally dense (plastic sulfur). At temperatures higher yet still, the bonds in long molecules are destroyed once again, and the mass becomes thinner. Maximally runny black sulfur becomes at 400oC, and boils at 445oC.

Why does the coin change its color over time?

A substance always aims to take its most stable form. Black plastic sulfur is not stable under normal conditions. Therefore, it gradually changes its internal structure, crystallizes and turns into yellow rhombic sulfur.

The black figurine is made of very long molecules of sulfur Sn. Such an internal structure of the substance is stable only at high temperature. It can be temporarily stabilized only by quick cooling. At room temperature, long molecules gradually “break”, and their fragments form ring molecules S8. The latter form crystals of rhombic sulfur, which is the only allotropic modification of sulfur, stable at room temperature. In addition to color change, changes in other physical properties also occur. The figurine becomes fragile and eventually shatters. This process cannot be prevented, but it is very interesting to watch.

The coin turned yellow and crumbled in a couple days

Well, nothing is actually wrong here. Sulfur crystallization is a complicated process. The time it takes is mostly determined by the temperatures the substance was subjected to initially.

Source:

https://melscience.com/en/experiments/sulfur-melt/

 

Melting #2: Copper (II) Sulfate (Didn’t Work)

Melting #2: Copper (II) Sulfate (Didn’t Work)

The last time we melted sulfur, and it was really fun (except for cleaning the test tube). Now let’s melt something else, what about Copper Sulfate?

Copper (II) sulfate is the inorganic compound with the chemical formula CuSO4. Older names for this compound include blue vitriol, bluestone, vitriol of copper, and Roman vitriol. The pentahydrate (CuSO4·5H2O), the most commonly encountered salt, is bright blue.

Melting Point: 110 °C (230 °F)

Sulfur’s melting point is 5 °C higher (which means they’ll melt about the same time).

It looks impossible to melt it because the sulfur is more (soft) like a powder, but this one is tiny crystals. Let’s give it a try anyway.

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Light the lamp!

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OK, it’s heating it up nicely.

A couple minutes later:

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The copper sulfate is turning whiter, but still, all of it still remains solid.

But look. There’s water vapor in there. That’s weird, maybe there’s too much heat? But the sulfate didn’t melt yet.

10 minutes later:

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The sulfur melted already at this time. But the sulfate still remains a solid and it’s just turning whiter.

20 minutes later:

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This is taking forever! It’s not melting. Did I do something wrong?

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It’s 115 °C already, and the temperature can go further.

I guess it won’t melt anymore so I turned off the heat.

Wow! this experiment is a fail. I wonder why it has water vapors? Why is it turning white? When is it actually going to turn to liquid?

Any ideas why it didn’t melt? Feel free to comment down below ↓

Melting #1: Sulfur (Making a Sulfur Coin)

Melting #1: Sulfur (Making a Sulfur Coin)

I’m going to be melting sulfur…

Sulfur is a chemical element with symbol S and atomic number 16. It is abundantmultivalent, and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Elemental sulfur is a bright yellow crystalline solid at room temperature.

Sulfur Melting Point: 115 °C ( 239.38 °F)

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Yay! the sulfur is melting!

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It took about 10 minutes to melt the sulfur. Now time to pour it into the mold!

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OK, the sulfur hardened. Time to take it out the mold. I used a hammer to take it out.

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No! that’s the ugly side. The better side is this:

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I used a hammer to take it out

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Wow, I’m actually impressed. You’re probably wondering why the sulfur is brown. Just wait a couple days and the coin will turn yellow. But once it turned yellow, it has a chance to crumble in a month. Because sulfur crystallization is a complicated process. The time it takes is mostly determined by the temperatures the substance was subjected to initially. I’ll be making another post to show you how the color changed.

Hope you enjoyed the experiment if you did, drop a like on the bottom ↓

Sources:

https://en.wikipedia.org/wiki/Sulfur

https://melscience.com/en/experiments/sulfur-melt/

 

 

Playing With Black Light

Playing With Black Light

I was just looking around the internet for some cool stuff, and I found something that catches my eye. I found black light.

A blacklight (or often black light), also referred to as a UV-A light, Wood’s lamp, or simply ultraviolet light, is a lamp that emits long-wave (UV-Aultraviolet light and not much visible light.

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Black light fluorescent tubes. The violet glow of a black light is not the UV light itself, which is not visible to the human eye, but visible light that escapes being filtered out by the filter material in the glass envelope.

 

One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV, so the lamp has a dim violet glow when operating. Blacklight lamps which have this filter have a lighting industry designation that includes the letters “BLB”. This stands for “blacklight blue”, which is a contradiction in that they are the type that does not look blue.

A second type of lamp produces ultraviolet but does not have the filter material, so it produces more visible light and has a blue color when operating. These tubes are made for use in “bug zapper” insect traps, and are identified by the industry designation “BL”.

But I don’t have a blacklight. So I made my own from the internet (man! I can’t live without the internet). 20170804_15213520170804_152200

 

Let’s test it by using highlighters.

It worked!

But I found this: Wikipedia says: “Scorpions are also known to glow a vibrant blue-green when exposed to certain wavelengths of ultraviolet light such as that produced by a black light, due to the presence of fluorescent chemicals in the cuticle. One fluorescent component is now known to be beta-carboline. A hand-held UV lamp has long been a standard tool for nocturnal field surveys of these animals. Fluorescence occurs as a result of sclerotisation and increases in intensity with each successive instar. This fluorescence may have an active role in scorpion light detection.”

And I have one! Let’s try it.20170804_152439

I collected this on November 2016. It’s about 12 cm which is quite small.

I wish I have another one to show you how I pinned it.20170804_152505

Nope, it didn’t work. Maybe because the scorpion is dead or I need to use a real black light.

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The next thing I wanted to do is to put the highlighter’s ink in water and I would like to compare it with water.

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Let’s do it!20170804_192513

It didn’t work well like I thought but at least it’s glowing nicely. Let’s compare it with the water.20170804_192518

Plain water looks nice too.

Hope you enjoyed this if you did, drop a like on the bottom ↓ 😀

Sources:

https://en.wikipedia.org/wiki/Blacklight

https://en.wikipedia.org/wiki/Scorpion

 

 

(DIY) How to make Ring + Stands for Test Tubes and Funnels

(DIY) How to make Ring + Stands for Test Tubes and Funnels

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I need a test tube ring and stand for this experiment, but I don’t have one. The chemical shop doesn’t have it either. I went to my laptop and looked at my online science supplier, but it’s too expensive. Then there’s only one way… Do it yourself! This is my idea. So in post, I’m going to show you step-by-step how to make ring stands for test tubes and funnels. Let’s get started!

Things you’ll need: Strong wire, a candle, lighter, scissors, forceps, and electrical tape.

 

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Some things are not in this photo.

 

1. Planning:

Of course, the first step of a project is planning. The whole stand was made by me (I designed it by myself). In this step, you just need to design your own stand.

If you want to have the exact same stand that I have, just follow the picture below.

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2. Making the base:

Make a circle with the wire and make sure to leave an end on both sides (one long one short). 20170802_173609

3. Making the circle:

Wrap the end of the circle around the longer end. Now try to stand it up, and make some changes to balance it.

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5. Making the ring:

Use the long end to make a ring. This depends on what you want to hold, and make sure it’s balanced by putting some weight on it.

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6. Wrapping the tape:

Electrical is just like rubber. You need to make the stand “not slipping around the table”. So put tape on the base and the ring. It looks messy but you’ll fix later.20170802_175812

7. Burning:

Melt the tape with a candle onto the metal. This will make the tape look cleaner and stronger.

 

8. Squeezing the tape:

While the tape is still soft, squeeze it with forceps. This will make the tape stick onto the metal.

9. Cleaning up the tape:

Use scissors to cut the excess off the tape. Mine is messy but if you put more effort into it, I’m sure that it’ll neater.20170802_180722

Finished. Test it and make sure nothing falls off the ring. Unfortunately, my wire is too short so I decided to make it a funnel holder.

This is one method of making a test tube or funnel holder, but I’m sure there’s more floating around.

Did you like my method? Feel free to comment down below ↓

I Figured out why the Coins look Different

I Figured out why the Coins look Different

Remember the coin experiment that I performed lately?

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When I washed the coins, they looked different.

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But why?

I finally figured out the answer.

Copper metal is oxidized by the Ag1+ to Cu2+ and the Ag1+ ions are reduced by the copper metal to silver metal.

But do you remember what the coins are made of?

Penny: The alloy remained 95 percent copper and 5 percent zinc until 1982, when the composition was changed to 97.5 percent zinc and 2.5 percent copper (copper-plated zinc) until now. Cents of both compositions appeared in that year.

50 Satang (Thai baht): The core is 99% iron and cladding is 99% Copper.

10 Yen (Japanese Yen): 95% copper, 3–4% zinc, and 1–2% tin.

The Penny turned yellow-orange because the zinc was mixed with copper.

The Thai coin turned darker because of the iron.

The Japanese coin turned yellow because of the zinc and tin. Tin is light yellow and zinc is gray.

I hope you enjoyed that experiment, if you did, comment down below ↓

Sources:

More sources at: The Silver Coin

 

 

Is this Iron or Magnetite?

Is this Iron or Magnetite?

Today I wanted to identify this brown dust. I found the dust by me. I accidentally dropped a magnet on the ground and the dust sticks to the magnet. So I collected it to perform some experiments with it. So in this post, I’m going to identify this dust. Let’s perform some tests.

This dust could be two things:

Magnetite: Magnetite is a mineral and one of the main iron ores. It is one of the oxides of iron. Magnetite is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. It is the most magnetic of all the naturally-occurring minerals on Earth. Naturally-magnetized pieces of magnetite, called lodestone, will attract small pieces of iron, which is how ancient peoples first discovered the property of magnetism.

Magnetite is very easy to identify. It is one of just a few minerals that are attracted to a common magnet. It is a black, opaque, sub metallic to a metallic mineral with a Mohs hardness between 5 and 6.5. It is often found in the form of isometric crystals.

But magnetite is brown and my dust is brown…

Iron: Elemental iron occurs in meteoroids and other low oxygen environments, but is reactive to oxygen and water. Fresh iron surfaces appear lustrous silvery-gray but oxidize in normal air to give hydrated iron oxides, commonly known as rust.

My dust is brown, so it be iron.

The dust has tiny chunks of stone in there too.

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1. Magnet Test:

I used a rare earth magnet to see if it attracts. Of course, that’s how I found it. This could mean that it’s iron or magnetite.

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2. Iron Test:

I poured the Dust onto a Petri dish. And I mixed a chain of paper clips in there. And it turns out that tiny pieces of the dust are on the paper clips. This probably means that the dust is magnetite.

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I tried to make the tiny stones stick onto the paper clips but didn’t work.

3. Reacting to Magnet Test:

When I used the forceps to carry a piece of tiny stone onto a piece of paper, some of the dust is sticking onto the stone! 20170731_203351

Let’s ignore that for now.

I wrapped a magnet in a plastic bag, in case the dust sticks on it (you wouldn’t be able to take the dust of the magnet. If you take off the plastic bag, the dust will come off).

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I took the north pole of the magnet and hover it over the small stone. The dust on the stone is attracting to the magnet, but some of them don’t. When I used the south pole of the magnet, the dust that isn’t attracting to the north pole is attracting to the south pole.

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After all of these tests, I think the dust is tiny pieces of magnetite. But I’m not sure, because magnetite is black. My final answer is: I don’t know… Scientists shouldn’t publish the results when they’re not sure. And that’s why my answer is I don’t know.

I’ll need to do some more tests with it to make sure…

What do you think it is? Let me know in the comment section↓

Sources:

https://en.wikipedia.org/wiki/Magnetite

https://www.google.co.th/search?q=how+to+identify+magnetite&rlz=1C1CHBD_enTH751TH751&oq=how+&aqs=chrome.1.69i59l3j69i57j69i60l2.3385j0j4&sourceid=chrome&ie=UTF-8

https://www.google.co.th/search?q=what+color+is+iron&rlz=1C1CHBD_enTH751TH751&oq=what+color+is+iron&aqs=chrome..69i57.8591j0j4&sourceid=chrome&ie=UTF-8

 

 

 

 

The Silver Coin

The Silver Coin

What about this experiment? Remember the silver tree? That was a great experiment. Go over there and check it out (here: https://danupondrake.com/2017/06/25/the-silver-tree/). The silver nitrate will stick to the copper coil and make crystals. But instead of copper coils, why don’t we try copper coins? It will be fun to try! Let’s get started then!

Let’s some coins from different countries.

Penny (19 mm diameter): The alloy remained 95 percent copper and 5 percent zinc until 1982, when the composition was changed to 97.5 percent zinc and 2.5 percent copper (copper-plated zinc) until now. Cents of both compositions appeared in that year.20170731_141057.jpg

50 Satang (Thai baht) (18 mm diameter): The core is 99% iron and cladding is 99% Copper.20170731_141106

10 Yen (Japanese Yen) (23.5 mm diameter): 95% copper, 3–4% zinc, and 1–2% tin.20170731_141232.jpg

To hang the coins in the beaker, I used paper clips to hold the coins…

…And tie rubber bands at each paper clips.20170731_143925 - Copy

I made the solution for the experiment and dipped the coins in there…

Now I just have to wait.

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30 Minutes later:

 

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The coins are just turning blacker. So I took the coins out and cleaned them.20170731_15315320170731_153124

The coins look different. The penny turn yellow-orange, the Satang turned darker, and the Yen turned yellow.

But I wonder why…

Maybe bec

Hope you enjoyed this post, if you did, tell me in the comment section ↓

Sources:

www.livescience.com/32401-whats-a-penny-made-of.html

https://en.wikipedia.org/wiki/Fifty-satang_coin

https://en.wikipedia.org/wiki/Japanese_yen

How to Look at Pond Water With a Microscope

How to Look at Pond Water With a Microscope

After the microscope slide series, I wanted real specimens from nature like pond water, which is what I’m doing today, and I have a pond in my backyard. I did this several times, it will be easy, so let’s get started.

Things you’ll need: Pond water, a jar, forceps eye dropper, microscope slides, cover slips, paper, and a microscope with 40x-100x magnification.20170726_163820

  1. Collect the water using the jar. I found 2 tadpoles and 1 mosquito larva in my collected water.20170726_163959
  2. Use the eye dropper to collect a small amount of the water from the jar.
  3. Place the microscope slide that you’re using on to a piece of paper
  4. Release one drop of the water onto the microscope slide from the eye dropper. 20170726_164218
  5. Use forceps to carry the cover slip, then use it to cover the slide.  This will spread the water out into a thin layer over the slide.