Phases and Phase Changes. The Phases Solid Liquid Gas Plasma ColdestHottest.

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Presentation transcript:

Phases and Phase Changes

The Phases Solid Liquid Gas Plasma ColdestHottest

Properties of Phases PhaseAre the molecules rigid, or do they flow? Is the shape indeterminate (flows) or defined (stuck)? Solid RigidDefined Liquid, Gas, and Plasma FlowIndeterminate

Phase Changes

(Boiling and Evaporation)

Phase Changes

Energy during a Phase Change Example) Water Freezes (liquid to solid) at 0 o C Stays constant at 0 o C during freezing

Energy during a Phase Change Example) Water Melts (solid to liquid) at 0 o C Stays constant at 0 o C during melting

Energy during a Phase Change Example) Water Boils (liquid to gas) at 100 o C Stays constant at 100 o C during boiling

Phase Changes In summary: During a phase change, the temperature is CONSTANT!!!

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