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19 Cards in this Set
- Front
- Back
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Define: gas
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the state of matter in which a material has neither a definite shape nor a definite volume
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Define: kinetic energy
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the energy an object has due to its motion
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Define: liquid
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the state of matter in which a material has a definite volume but no definite shape
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Define: solid
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the state of matter in which materials have a definite shape and a definite volume
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Define: absolute zero
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a temperature of 0 kelvins
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Define: Boyle's law
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the inverse variation of the volume of a gas with its pressure if the temperature and the number of particles are constant
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Define: Charles's law
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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
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Define: pressure
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the result of a force distributed over an area
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Define: condensation
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the phase change in which a substance changes from a gas or vapor to a liquid
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Define: deposition
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the phase change in which a gas or vapor changes directly into a solid without first changing into a liquid
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Define: endothermic
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a description of a change in which a system absorbs energy from its surroundings
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Define: evaporation
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the process that changes a substance from a liquid to a gas at temperatures below the substance’s boiling point
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Define: exothermic
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a description of a change in which a system releases energy to its surroundings
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Define: heat of fusion
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the energy a substance must absorb in order to change form a solid to a liquid
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Define: heat of vaporization
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the energy a substance must absorb in order to change from a liquid to a gas
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Define: phase change
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a reversible physical change that occurs when a substance changes from one state of matter to another
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Define: sublimation
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the phase change in which a substance changes form a solid to a gas or vapor without changing to a liquid first
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Define: vapor pressure
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the pressure caused by collisions of particles in a vapor with the walls of a container
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Define: vaporization
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the phase change in which a substance changes from a liquid to a gas
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