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3.1 and 3.3

vocab words

QuestionAnswer
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.
Created by: bubble.bee