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Vocabulary 3

TermDefinition
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 the energy an object has due to its motion
pressure the result of a force distributed over an area
absolute zero a temperature of 0 k
Charles's law states that the volume of a gasis directly proportional to its temperature in kelvins if the pressure and the number of particles of the gas are constant.
Boyle's law states that the volume of a gas is inversely proportional to its pressure if the temperature and the number of particles are constant
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 liquid
exothermic system releases energy to its surroundings
vaporization phase change in which a substance changes from a liquid to a gas
heat of vaporization the energy a substance 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 temperatures below the substances boiling point
vapor pressure pressure caused by the collisions of vapor and the walls of the container
condensation phase change in which a substance changes from a vapor or gas 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 when a gas or vapor changes directly into a solid without first changing to a liquid
Created by: cedric.harris
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