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25 Cards in this Set
- Front
- Back
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Kinetic Energy |
Energy an object has due to its motion |
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Pressure |
Result of a force distributed over an area |
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Absolute Zero |
Temp. of 0 kelvins |
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Charles's Law |
Direct proportion of volume of gas to its temp. if the pressure and number of particles of gas are constant |
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Boyle's Law |
Inverse variation of volume of gas with its pressure if the temp. and number of particles are constant |
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Phase Change |
Reversible physical change that occurs when a substance changes from one state of matter to another |
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Endothermic |
Description of a change in which a system absorbs energy from its surroundings |
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Heat of Fusion |
Energy a substance must absorb to change from a solid to a liquid |
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Exothermic |
Description of a change in which a system releases energy to its surroundings |
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Vaporization |
Phase change in which a substance changes from a liquid to a gas |
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Heat of Vaporization |
Energy a substance must absorb in order to change from a liquid to a gas |
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Evaporation |
Process that changes a substance from a liquid to a gas at temps. below substance's boiling point |
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Vapor Pressure |
Pressure caused by collisions of particles in a vapor with the walls of the container |
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Condensation |
Phase change in which a substance changes from a gas to a liquid |
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Sublimation |
Phase change in which substance changes from a solid to a gas without changing to a liquid first |
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Deposition |
Phase change in which a gas changes directly into a solid without changing into a liquid first |
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Describe a solid |
Solids have a definite volume and a definite shape. The atoms are tightly packed together and arranged in a regular pattern. The atoms vibrate in place. |
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Describe a liquid |
Liquids have a definite volume and a variable shape. The atoms are not as tightly packed as a solid's. The atom's move around or flow past each other. |
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What unit of measurement is pressure measured in? |
Pascals |
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Melting is......... |
Endothermic |
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Freezing is...... |
Exothermic |
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Condensation is...... |
Exothermic |
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Sublimation is...... |
Endothermic |
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Deposition is....... |
Exothermic |
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Vaporization is........ |
Endothermic |
