| A | B |
|---|
| compound | substance formed from 2 or more elements |
| chemical formula | shows what elements & number of atoms in compound |
| chemical bonds | force that holds atoms together in compound |
| ion | charged particle with more or less electrons that protons |
| oxidation number | positive or negative number indicates electrons gained or lost to stabilize |
| binary compound | composed of two elements |
| polyatomic ion | a positive or negative charged, covently bonded group of atoms |
| hydrate | compound has water chemically attached to its atoms |
| molecule | neutral particle formed from electron sharing |
| atom | smallest piece of matter (element) |
| ionic bond | force of attraction in opposite charges of ion |
| covalent bond | attraction between atoms when share electrons |
