| A | B |
|---|
| solid | The coldest state of matter |
| liquid | Not the hottest or the coldest state of matter |
| gas | The hottest state of matter |
| condensation | Changing from a gas to a liquid |
| freezing | Changing from a liquid to a solid |
| evaporation | Changing from a liquid to a gas |
| thermometer | A tool to measure temperature |
| energy | Heating things up gives them more of this |
| matter | Everything is made of this! |
| molecules | Small parts of matter |
| melting | Changing from a solid to a liquid |
