| A | B |
|---|
| solid | matter that has a definite volume and a definite shape |
| liquid | matter that has a definite volume but no definite shape |
| gas | matter that has no definite volume or shape |
| solid | Particles in a _____ are packed closely together. |
| liquids | _____ take the shape of their containers. |
| gas | A _____ spreads out to fill its container. |
| heat | Adding or removing _____ makes substances change from one state to another. |
| increases | When the temperature of a material ______, its particles move faster. |
| decreases | When the temperature of a material ______, its particles move slower. |
| melting | the change of state from a solid to a liquid |
| evaporation | the change of state from liquid to a gas |
| boiling | the rapid change of state from liquid to a gas |
| condensation | the change of state from a gas to a liquid |
| freezing | the change of state from a liquid to a solid |
| phases of matter | any of the three forms that matter may ordinarily take: solid, liquid and gas |
| particles in a gas |  |
| particles in a liquid |  |
| particles in a solid |  |
