Rust and iron – Chemistry project
A rusty sign You can easily see that iron rusts and turns red when oxygen touches it. Go look around your backyard or your neighborhood and try to find ten things [...]
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06, 2017
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06, 2017
Helium balloon projects – Chemistry
You can see that helium is lighter than air by getting a helium balloon. When you let go of it, it goes up, because the helium is lighter than the nitrogen and [...]
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06, 2017
Carbon dioxide project with Dry Ice – Chemistry
Frozen carbon dioxide (dry ice) - for your carbon dioxide project How can you see carbon dioxide? Normally you can't see carbon dioxide because it is an invisible gas. But [...]
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06, 2017
What is carbon dioxide? Molecules and Chemistry
Tobacco plants growing put carbon dioxide molecules back into the air - like all plants What is carbon dioxide made of? Carbon dioxide is one of the simplest and commonest [...]
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05, 2017
What is photosynthesis? Plant Biology
Chloroplasts (seen through a microscope) Photosynthesis is the way some cells on Earth pull in light from the sun and use it to make energy to repair and reproduce themselves. [...]
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05, 2017
Circulatory System – Biology and Evolution
Circulatory system: A dog heart What is the circulatory system? The circulatory system takes food and air from outside your body and brings it all over your body so that [...]
