13.4 Changes of State Sublimation occurs because solids have a vapor pressure Occurs in solids with vapor pressures greater than atmospheric pressure at.

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Presentation transcript:

13.4 Changes of State Sublimation occurs because solids have a vapor pressure Occurs in solids with vapor pressures greater than atmospheric pressure at or near room T

Phase Diagrams Single graph showing relationships among solid, liquid, and gas phases of substance in a sealed container T and Pressure used to identify which phase substance is in

Triple Point - point at which all three phases of matter are in equilibrium Critical Point – the conditions above which distinct liquid and gas phases do not existliquid gasphases