Separating Salt out of Water

Separating Salt out of Water Salt (NaCl) is a natural mineral made up of white cube-shaped crystals composed of two elements, sodium, and chlorine. It is translucent, colorless, odorless (officially, though we think you can smell the freshness of the sea in one of our boxes) and has a distinctive and characteristic taste. Salt occurs naturally in many parts of […]

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Elephant’s Toothpaste

Elephant’s toothpaste Today I’m going to do this common experiment that is used in chemistry classes called the elephant’s toothpaste. Elephant’s toothpaste is a foamy substance caused by the rapid decomposition of hydrogen peroxide. This is often used for classroom demonstrations because it requires only a small number of ingredients and makes a “volcano of foam”. Things you’ll need: a plastic container (as shown […]

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The Silver Tree

The Silver Tree As said on my post (it finally came 2) the silver nitrate is only 10 grams and it’s about $20. 10 grams is a little amount and it is very expensive, so I hope I don’t make any mistakes. The classic silver tree demonstration! Very simple to set up and perform, it’s great to introduce kids to […]

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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 each. I pour 10ml of […]

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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 red jungle fowl. These jungle fowl are a little more adept at flying than chickens are now, but they are fundamentally more adapted for a ground-based life All of their food is located on the ground, and they have an adapted beak to match. Their feet are adapted for walking, rather than perching. Its wings have become partially vestigial since the survival of an individual no longer relies heavily on flight; instead, natural selection has advanced those ground-oriented traits. So, to recap, chickens are bad at flying because their direct ancestor was bad at flying, because they’re adapted for spending time on the ground. 2. Selective Breeding by Humans Chickens are not a natural species; they were created by breeding the red jungle fowl into a new organism. Since humans were responsible for the gene selection process (“artificial selection”, as opposed to natural selection), chickens were bred not for survivability traits, but to have great big tasty breast muscles. Chickens’ ability to fly has only worsened under human management because no breeder has prioritized that, opting instead for edibility and commercial traits.

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Changing Iron to Copper

Changing Iron to Copper In this post, I’m going to show you how to change iron to copper in two easy steps.   Things you’ll need: copper (II) sulfate, a cup, a spoon, water, and nails or paper clips. Pour water into the cup. Put lots of copper sulfate into the cup. I put two spoons. Drop a paper clip […]

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Color Change Chemistry

Color Change Chemistry Change a clear liquid pink, then back to clear again in this impressive experiment. It may seem like magic, but it’s actually the science of PH. Things you’ll need: a beaker, a graduated cylinder, test tube holder, 3 test tubes, pipet, phenolphthalein, sodium carbonate, vinegar, and water. Fill the beaker halfway with water, and set the test […]

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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 wings. A third approach, motion dazzle, confuses the observer with a conspicuous pattern, making the object visible but momentarily harder to locate. The majority of camouflage methods aim for crypsis, often through a general resemblance to the background, high contrast disruptive coloration, eliminating shadow, and countershading. In the open ocean, where there is no background, the principal methods of camouflage are transparency, silvering, and countershading, while the ability to produce light is among other things used for counter-illumination on the undersides of cephalopods such as squid. Some animals, such as chameleons and octopuses, are capable of actively changing their skin pattern and colours, whether for camouflage or for signalling. Some animals camouflage in the ocean like the rockfish or flounders. But in my opinion, this one would be the best. It is called the “leaf fish”. Leaffishes are small freshwater fishes of the Polycentridae family, from South America. All of these fishes are highly specialized ambush predators that resemble leaves, down to the point that their swimming style resembles a drifting leaf (thus the common name leaf fish, which is shared with old world fishes […]

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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 of each egg by tapping […]

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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 to eastern and central North […]

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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 distinct “Periophthalmus lineage”, together with […]

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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. Use a pipet to add […]

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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. Pressure melted the ice, making […]

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Do Dolphins live in Rivers?

Do Dolphins live in Rivers? We probably heard that dolphins live in the ocean. But do they live in rivers? To find out please continue reading. River dolphins are a widely distributed group of fully aquatic mammals that reside exclusively in freshwater or brackish water. They are an informal grouping of dolphins, which is a paraphyletic group within the infraorder Cetacea. […]

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How to make the Surface of the Moon

How to make the Surface of the Moon The Moon is an astronomical body that orbits planet Earth, being Earth’s only permanent natural satellite. It is the fifth-largest natural satellite in the Solar System, and the largest among planetary satellites relative to the size of the planet that it orbits (its primary). Following Jupiter’s satellite Io, the Moon is second-densest […]

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