| A | B |
|---|
| melting | the change of state when a solid becomes a liquid as energy is added |
| freezing | the change of state when a liquid becomes a solid as energy is removed |
| boiling | the rapid change of a state as energy is added |
| evaporation | the process at a range of temperatures in which a liquid becomes a vapor |
| condensation | the process in which a vapor becomes a liquid as energy is removed |
| sublimation | the change of state in which a solid becomes a gas without the liquid state |
| deposition | the change of state in which a gas turns to a solid without the liquid state |
| Density | the amount of matter of an object in a given volume |
| mass | the amount of matter in an object |
| volume | the amount of space an object takes up |
| gas | particles move very rapidly and freely, has no definite shape or volume |
| liquid | particles slid past each other, take the shape of its container and have definite volume |
| solid | particles vibrate in place, have a rigid structure and definite volume |
| The kinetic theory of matter | matter changes state when energy is added or removed |
| The law of conservation of mass | Mass is neither created nor destroyed, just the state changes |
