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19 terms

Nelson ADV PS CH 3 Key Terms

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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 of a force distributed 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
Boyles's Law
the inverse variation of the volume of a gas with its pressure if the temperature and the number of particles are constant
Phases 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 to change from a solid to a liquid
exothermic
a description of a change in which a 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 gas
evaporation
the process that changes a substance from a liquid to a gas at temperatures below the substances boiling point
vapor pressure
the pressure caused by the collisions of particles in a vapor with the walls of a container
condensation
the phase change in which a substance changes from 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 first
deposition
the phase change in which a gas or vapor changes directly into a solid without first changing into a liquid