| A | B |
|---|
| solid | definite shape and volume |
| liquid | definite volume, no shape of its own |
| fluid | substance that flows |
| gas | has neither a definite shape nor a definite volume |
| melting | change in state from a solid to a liquid |
| freezing | change in state from a liquid to a solid |
| vaporization | change in state from a liquid to a gas |
| evaporization | vaporization that takes place only on the surface of a liquid |
| boiling | vaporization that takes place both below and at the surface of a liquid |
| condensation | change in state from a gas to a liquid |
| sublimation | change in state from a solid to a gas |
