| A | B |
|---|
| solid | state of matter in which materials have a definite shape and a definite volume |
| liquid | state of matter in which a material has a definite volume but not a definite shape |
| gas | state of matter in which a material has neither a definite shape nor a definite volume |
| kinetic energy | energy an object has due to its motion |
| phase change | reversible physical change that occurs when a substance changes from one state of matter to another |
| endothermic | system absorbs energy from its surroundings |
| heat of fusion | amount of energy absorbed in a phase change |
| exothermic | system releases energy to its surroundings |
| vaporization | phase change in which a substance changes from a liquid into a gas |
| heat of vaporization | amount of energy absorbed when a liquid changes to a gas |
| evaporation | the process that changes a substance from a liquid to a gas at temperatures below the substance’s boiling point |
| vapor pressure | pressure caused by the collisions of this vapor and the walls of the container |
| condensation | phase change in which a substance changes from a gas or vapor to a liquid |
| sublimation | phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first |
| deposition | gas or vapor changes directly into a solid without first changing to a liquid |
| Bose-Einstein condensate | at extremely high temperatures matter exists as plasma |
| potential energy | energy an object posseses due to its position |
