AP Chemistry - Solids, Liquids, and Gases
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Last updated 9:30 PM on 9/21/22
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16 Terms
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Deposition
Gas to Solid
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Sublimation
Solid to Gas
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Vaporization
Liquid to Gas (Endothermic)
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Condensation
Gas to Liquid (Exothermic)
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Freezing
Liquid to Solid (Exothermic).
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Melting
Solid to Liquid (Endothermic)
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Heat of Fusion
Hear required to melt one mole of solid. Freezing is negative; Melting is positive.
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Heat of Vaporization
Heat required to vaporize one mole of liquid to gas. Condensation is negative; Vaporization is positive.
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Specific Heat
Heat required to change the temperature of 1 gram of water by 1°C
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Triple Point
Temperature and pressure at which three phases of a substance exist in equilibrium
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Critical Temperature
Highest temperature at which a substance can exist as a liquid
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Critical Pressure
Pressure required to liquefy a gas at critical temperature
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Vapor Pressure
Pressure caused by evaporating or subliming molecules. Depends on intermolecular attractions and temperature. Non-polar liquids have higher vapor pressures than polar liquids.
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Non-Polar Substances
Low Freezing/Boiling Points
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Polar Substances
Higher Freezing/Boiling Points
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Ionic Substances
Higher Freezing/Boiling Points