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Unformatted text preview: o Solids: definite volume and shape, particles fixed but vibrate in position. o Liquids: definite volume and shape (container), particles close but mobile. o Gases: indefinite volume and shape, particles far apart and move fast (500m/s). Changes of state: occur with absorption or emission of heat but no temperature change. o Melting (solid to liquid), Freezing (liquid to solid). Heat of fusion: amount of heat absorbed/released when 1 gram freezes/melts. o Sublimation (solid to a gas), deposition (gas to a solid) o Boiling (entire liquid to gas), evaporation (surface molecules vaporize to a gas) o Condensation: gas molecules lose energy and liquefy (gas to a liquid) Heat of vaporization: Amount of heat needed to vaporize 1 gram of liquid at BP. Amount of heat lost when 1 gram of vapor condenses at BP....
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- Spring '08