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johnsons
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Solid
The state of matte in which materials have a definite shape and a definite volume.
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liquid
the state of matter in which a material has neither a definite volume, but not a definite shape.
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gas
the state of matter in which a material has neither a definite shape not a definite volume
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kinetic energy
the energy an object has due to it's motion
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pressure
the result of a force distributed over an area
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absolute zero
a temperature of 0 kelvins
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Charles Law
the direct proportion of the volume of a gas to its temp. (in kelvins) if the pressure and the number of particles of the gas are constant
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Boyle's Law
the inverse variation of the volume of a gas with its pressure if the temp. and the number of particles are constant.
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Phase Change
a reversible physical change that occurs when a substance changes from one state of matter to another
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endothermic
a description of a change in which a system absorbs energy from its surroundings
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Heat of fusion
the energy of a substance must absorb in order to change from a solid to a liquid
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exothermic
a description of a change in which a system releases energy to its surroundings
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vaporization
the phase change in which a substance changes from a liquid to a gas
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Heat of Vaporization
the energy of a substance must absorb in order to change from a liquid to a gas.
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evaporation
the process that changes a substance from a liquid to a gas at temperatures below the substance's boiling point.
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vapor pressure
the pressure caused by the collisions of particles in a vapor with walls of a container
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condensation
the phase change in which a substance changes from a gas or vapor to a liquid.
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sublimation
the phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first
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deposition
the phase changing in which a gas or vapor changes directlyt into a solid without first changing into a solid without first changing into a liquid.
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