| A | B |
| Kinetic theory of matter | Tiny particles in motion make up all matter |
| Plasma | Highly charged gaslike mixture |
| Crystals | Particles arranged in a geometric pattern |
| Solid | Definite shape & volume |
| Amorphous Material | Solid not made of crystals |
| Steam | Water vapor |
| Thermal Expansion | Expannds when hot, and contracts when cold |
| Liquid | No definite shape, but definite volume |
| Gas | No definite shape or volume |
| Element | Substance made up of its own atoms |
| Compounds | 2 or more chemically combined elements |
| Mixture | 2 or more substances combined |
| Solution | 2 or more substances combined w/ one dissolving into another |