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3.1, 3.3 vocab sci.

Vocabulary for sections 3.1 and 3.3

QuestionAnswer
solid the state of matter in which materials have a definite shape and a definite volume.
liquid the state of matter in which a material has a definite volume but not a definite shape.
gas is the state of matter in which a material has neither a definite shape nor a definite volume.
kinetic energy the energy an object has due to its motion.
phase change is the reversible physical change that occurs when a substance changes from one state of matter to another.
endothermic when the system absorbs energy from it's surroundings
heat of fusion the amount of energy absorbed
exothermic when the system releases energy to it's surroundings
vaporization the phase change in which a substance changes from a liquid to a gas
heat of vaporization the amount of energy a substance must absorb to change from a liquid 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 the pressure caused by the collisions of this vapor and the walls of the container
condensation the phase change in which a substance changes fom a gas or vapor to a liquid
sublimation the phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid
depostion when a gas or a vapor changes directly into a solid without first changing into a liquid
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