| A | B |
|---|
| Name | Definition |
| random motion | particles can move in any direction and can have different speeds |
| solid | matter with a fixed shape and a fixed volume |
| liquid | a matter with a fixed volume but not a fixed shape |
| gas | matter that has no fixed volume and no fixed shape |
| matter | anything that takes up space and has mass |
| temperature | a measure of the average kinetic energy of all the particles in an object |
| thermal energy | the sum of the kinetic energy and potential energy of the particles in a material |
| melting point | the temperature at which the material changes from a solid to a liquid |
| freezing point | the temperature at which the liquid changes to a solid |
| vaporization | change from a liquid state to a gas |
| boiling | vaporization that occurs within a liquid |
| boiling point | the temperature at which boiling occurs in a liquid |
| evaporation | vaporization that occurs at the surface of a liquid |
| condensation | the change from a gas to a liquid |
| sublimation | the change of a solid to a gas without going through the liquid state |
| deposition | the change of a gas to a solid without going through the liquid state |
| potential energy | the energy an object has due to its position |
