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 …

What is Silica Gel?

What is Silica Gel? Silica gel is a granular, vitreous, porous 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 …

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: The coin has turned white and it came apart into a couple pieces... I …

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 …

Burglar Door Alarm

Burglar Door Alarm The last time I did an alarm that's under a mat and it received a lot of likes. The link for that is here: How to Make a Burglar Alarm Mat. So today I have another alarm to make, and it involves a door. Make sure to follow the pictures and have fun. Things …

The Sediment of Lead (II) Nitrate

The Sediment of Lead (II) Nitrate Today, I'm going to do a common experiment about the sediment of Lead (II) Nitrate. This is a very quick demonstration showing that two solids can react together. White lead nitrate and white potassium iodide react to make yellow lead iodide. I added 5 grams of each chemical into 95ml  of water so I could have 5 % of …

Why can’t Chickens Fly?

Why can't Chickens Fly? Most chicken breeds are still able to fly short distances. For example, flying up into a tree (that's where they would naturally roost), or to escape a predator. They certainly are not good at flying, though. There are two reasons for that. 1. Ancestry Chickens were bred from a wild species call the …

Leaf Fish

Leaf Fish Do you know what camouflage is? Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see (crypsis), or by disguising them as something else (mimesis). Examples include the leopard's spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid's …

Eggs are Strong

Eggs are Strong Next time someone's cooking with eggs around your house, save the eggshells so that you could astound your friends with this incredible stunt. Things you'll need: 4 raw eggs, a small pair of scissors, masking tape, some books. To crack the eggs and get four empty eggshells, gently break open the small end …

The Wood-nettle: a Plant that could Sting like a Bee

The Wood-nettle: a Plant that could Sting like a Bee This will be a short post. If you're interested please continue reading. There are lots of poisonous plants out there. But not as painful as this one: Laportea canadensis, commonly called Canada nettle or wood-nettle, is an annual or perennial herbaceous plant of the nettle family Urticaceae, native …

Walking Fishes

 Walking Fishes Can fishes walk on land? Sounds crazy! But these two fish can. 1.  Mudskippers are amphibious fish, presently included in the subfamily Oxudercinae, within the family Gobiidae (gobies). Recent molecular studies do not support this classification, as oxudercine gobies appear to be paraphyletic relative to amblyopine gobies (Gobiidae: Amblyopinae), thus being included in a …

Density Column

Density Column Let's start off with an easy experiment today. Create a colorful column with three liquids stacked on top of each other inside a test tube. Things you'll need: test tubes, pipet, food coloring, light or dark corn syrup, vegetable oil, and water. Pour about 3 ml of corn syrup into the test tube. …

Ice is Sticky

Ice is Sticky I have an experiment that uses only ice. Things you'll need: 2 ice cubes. Press the flat sides of two ice cubes together. Slowly count to thirty, then let go one of the ice cubes. What happened? When you pushed the two ice cubes together, you created pressure between the two flat sides. …

Cold Chemistry

Cold Chemistry Endothermic chemical reaction use up heat energy, which means the end result is cool to the touch. Use Alka-Seltzer to see this reaction for yourself! Things you'll need: A beaker, a thermometer, an Alka-Seltzer tablet, ice, and water. Fill the beaker with ice. Add enough water to cover the ice fully. Put the thermometer …

Mushroom Spores

Mushroom Spores A mushroom is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source. The standard for the name "mushroom" is the cultivated white button mushroom, Agaricus bisporus; hence the word "mushroom" is most often applied to those fungi (Basidiomycota, Agaricomycetes) that have a stem (stipe), …

Invisible ink

Invisible ink We know that phenolphthalein will turn pink if you drip 2-3 drops into a chemical that is base. That gave me an idea of how to make invisible ink. Things you'll need: phenolphthalein solution, white paper, Q-tip, and ammonia-based glass cleaner (like Windex) Put a few drops of phenolphthalein onto a Q-tip. Use the …

The Sleeping Grass

The Sleeping Grass Mimosa pudica (from Latin: pudica "shy, bashful or shrinking"; also called sensitive plant, sleepy plant, Dormilones, sleeping grass, or shy plant) is a creeping annual or perennial herb of the pea family Fabaceae often grown for its curiosity value: the compound leaves fold inward and droop when touched or shaken, defending themselves from …

What is Xylitol

What is Xylitol Xylitol is a sugar alcohol used as a sweetener. It has the formula CH2OH(CHOH)3CH2OH. Xylitol is categorized as polyalcohol or sugar alcohol, and it has some dental benefits in that it reduces cavities. One gram of xylitol contains 2.43 kilocalories (kcal), as compared to one gram of sugar, which has 3.87 kcal. …

Swirling Colors

Swirling Colors Can you make colors move in milk? Then perform this experiment. Things you'll need: whole milk, a shallow dish, food coloring, and liquid dish soap. 1. Pour whole milk into the shallow dish.2. Let the milk warm up to room temperature. 3. Place drops of different food coloring in the milk. DO NOT STIR. …

The Moebius Strip

The Moebius Strip You've probably heard the expression, "There are two sides to everything". But are there? You can find out by making this strip. Things you'll need: several strips of paper 25cm long and 2cm wide, scissors, a pen, and tape. 1. To make the Moebius strip, you need to half-twist the strip of …

Butterflies

Butterflies The family of butterflies and moths is called Lepidoptera. The earliest known butterfly fossils are from the mid Eocene epoch, between 40-50 million years ago. But no one knows which was the first butterfly on earth. The first butterfly onThailand is the Butterfly bush burning sugar (Papilio arcesilaus). The largest butterfly in the world …

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