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Chapter 3 Vocabulary

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 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.
Pressure The result in a force distributing over an area.
Absolute zero A temperature of 0 kelvins.
Charles's law The direct proportion of the volume of a gas to its temperature (in kelvins) if the pressure and the number of particles of the gas are constant.
Boyel's law The inverse variation of the volume of a gas with its pressure if the temperature at which vapor pressure is equal to atmospheric pressure.
Phase change A reversible physical change that occurs when a substance changes from one state of matter to another.
Endothermic A description of a change in which a system absorbs energy from its surroundings.
Heat of fusion The energy a substance must absorb
Exothermic The system releases energy to its surroundings.
Vaporization The phases change in which a substance changes from a liquid to a gas.
Heat of vaporization One gram of water gains 2261 joules of energy.
Evaporation The process that changes a substance from a liquid to a gas at temperatures below the substances boiling points.
Vapor pressure The pressure caused by the collisions of this vapor pressure and the walls of the container.
Condensation The phase change in which a substance changes from a gas to 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 first.
Deposition When a gas or vapor changes directly into a solid without first changing to a liquid.
Created by: kayla.brady