Chemistry

Chemistry is the science of matter and the changes it undergoes during chemical reactions. In this section, learn about everyday chemistry, from chlorine beach to helium, and even why chocolate turns gray.

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That's one seriously big number, and technically Amedeo Avogadro didn't even come up with it. So how did the Italian chemist make such an indelible (numerical) mark on the wonderful world of chemistry?

By Jonathan Atteberry

These small molecules are the foundation for much bigger things, from ordinary household products around us to essential components within our bodies.

By Debbie Swanson

Polymers are the basic components in so many of the products we use each day.

By Debbie Swanson

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At the same time scientists discovered that nitrous oxide could numb agonizing pain, they also found it could make you really lightheaded and silly. Yes, huffing parties started in the 1700s.

By Dave Roos

If you've ever had a half-frozen beer explode on you, you know that yes, alcohol freezes - but not all types freeze at the same rate. We'll let you in on the secrets to frozen alcoholic delights.

By Alison Cooper