| A | B |
|---|
| matter | anything that has mass and takes up space |
mass,  | the amount of matter in an object |
| volume | the amount of space something takes up |
| solid, liquid, gas | the three states of matter |
| physical change | the kind of change that happens when matter melts or freezes |
evaporation,  | turns liquid to gas; water to vapor |
melting,  | turns solid to liquid; ice to water |
| water vapor | water in its gas state |
condensation,  | turns gas to liquid; water vapor to water |
freezing,  | turns liquid to solid; water to ice |
| expand | spread apart; take up more space |
| contract | the opposite of expand |
| atom | a small particle that makes up matter |
| chemical change | a change that causes matter to become a new kind of matter |
