| Temperature | The measure of how hot or cold something is. |
| Thermometer | An instrument used to measure temperature |
| Condensation | A change in state from a gas to a liquid |
| Heat | The movement of thermal energy from one place to another |
| Melting | A change in state from a solid to a liquid |
| Thermal energy | The energy of the motion in particles of matter |
| Evaporation | A change in state from a liquid to a gas |
| Freezing | A change in state from a liquid to a solid |
| convection | the movement of heat by particles in liquids and gases moving from one place to another |
| radiation | the movement of heat without any substances moving or touching |
| chemical change | a change that produces different kinds of amtter |
| friction | the force that is couased by objects rubbing together |
| conductor | a substance that allows heat to travel through ti easily |
| insulator | a substance that doesn't allow heat to travel through it easily |
| conduction | the movement of heat from one object into an object that it is touching |