| A | B |
|---|
| solid | definite shape and volume: keeps its shape; particles very close together |
| liquid | definite volume;takes shape of its container; can be poured |
| gas | no definite volume or shape; particles very far apart and move quickly |
| freezing | changes liquid to solid when temperature gets colder |
| melting | changes solid to liquid when temperature gets warmer |
| evaporation/boiling | liquid to gas when temperature gets warmer |
| condensation | gas to liquid when temperature gets cooler |
| matter | anything that has mass and takes up space |
