| A | B |
|---|
| Ion | An atom or group of atoms that has a positive or negative charge |
| Ionic Bond | The attraction between oppositely charged ions |
| Formula Unit | Chemical formula with the least number of elements out of the set of empirical formulas having the same proportion of ions as elements |
| Compound | A substance made of two or more different elements joined together in a specific way |
| Subscript | A distinguishing character or symbol written directly beneath or next to and slightly below a letter or number |
| Covalent Bond | A type of bonding which atoms share electrons |
| Molecule | A collection of atoms bonded together that behave as a unit |
| Binary | A two-element compound |
| Ternary | Consisting of three different elements or groups |
| Polyatomic Ion | A charged particle which has two or more atoms held together by covalent bonds |
| Metallic Bond | The type of chemical bond between atoms in a metallic element, formed by the valence electrons moving freely through the metal lattice |
| Isotope | Atoms with the same number of protons but different numbers of neutrons |
