click below
click below
Normal Size Small Size show me how
3.1 and 3.3
vocab words
Question | Answer |
---|---|
solid | definite shape and a definite volume. |
liquid | definite shape and no definite voulme. |
gas | no definite shape and no definite volume. |
kinetic energy | energy in an object due to its motion. |
phase change | a reversible physical change that occurs when a substance changes from one state of matter to another. |
endothermic | a change in which a system absorbs energy from its surroundings. |
heat of fusion | energy a substance must absorb in order to change from solid to a liquid. |
exothermic | change in which a system releases energy to its surroundings. |
vaporization | phase change in which a substance changes from a liquid into a gas. |
heat of vaporization | energy a subustance must absorb in order to change from a liquid to a gas. |
evaporation | process that changes a substance from a liquid to a gas at the temperatures below the substances boiling point. |
vapor pressure | pressure caused by the collisions of particles in a vapor with the walls of a 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 | phase change in which a gas or vapor changes directly into a solid without it first changing into a liquid first. |