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chemistry vocab.
| Term | Definition |
|---|---|
| solid material that is a conducter | metal |
| an element or substance that isnt a metal | nonnmetal |
| an element with metal and nonmetal properties | metalloid |
| group | columns |
| period | rows |
| element | a substance that cant be broken down |
| atom | the basic unit of all living things |
| nucleus | centeral part of an object |
| electron shell | circles around the nucleus |
| protons | positive charge, in the nucleus |
| neutrons | no charge, in the nucleus |
| electrons | negative charge, on the electron shells |
| atomic # | same # of protons |
| atomic mass | the mass of an atom |
| valence electrons | electrons on the outermost shell |
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