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intro. to I.S.

lloyd - pnhs - intro to I.S. vocab

QuestionAnswer
solid the state of matter in which materials have a definite shape and a definate volume
liquid the state of matter in which a material has a definite volume but not a definite shape
gas 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 the reversible physical change that occurs when a substance changes from one state of matter to another
endothermic the system absorbs energy from its surroundings
heat of fusion the energy a substance must absorb in order to change from a solid to a liquid
exothermic the system releases energy to its surroundings
vaporization the phase change in which a substance changes from a liquid into a gas
heat of vaporization the energy a substance must absorb in order 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 substances boiling point
vapor pressure caused by collisions of this vapor and the walls of the container
condensation the phase change in which a substance changes from a gas or vapor to liquid
sublimation the phase change in whicha substance changes from a solid to a gas or vapor without changing to a liquid first
depositon when a gas or vapor changes directly into a solid without first changing to a liquid.
Created by: nlloyd9
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