Tip - What is an Atom?

Published 10 years, 1 month(s) ago | Submitted by Sean Timm

Atoms are the basic units of matter. They are made up of three particles: protons, neutrons and electrons.

For further reading: http://www.livescience.com/37206-atom-definition.html

Posted: 10 years, 1 month(s) ago

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