| A | B |
| solid | matter that has a definate shape and volume |
| liquid | matter with a definate volume, but an indefinate shape |
| gas | matter with an indeifnate shape and volume |
| melting | a change from a solid to a liquid |
| freezing | a change from a liquid to a solid |
| vaporzation | a change from a liquid to a gas |
| evaporation | a change from a liquid to a gas that occurs only at the surface of the liquid |
| condensation | a change from a gas to a liquid |
| sublimation | a change from a solid to a gas |