WHAT'S INSIDE: 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.
  • Chemical Elements
  • Chemical Compounds
  • Chemical Processes and Tests
FEATURED: CHEMISTRY

Tantalum, a bluish-gray metallic chemical element. When polished, tantalum is silvery-white, resembling platinum.

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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.

Biting on aluminum foil can be painful. Why?

Biting on aluminum foil can be painful -- basically, when you bite on foil, you build a battery in your mouth. Ouch!

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