Phases of Matter Vocabulary Heat of Fusion Amount of heat needed to change from a solid to a liquid.

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Presentation transcript:

Phases of Matter Vocabulary

Heat of Fusion Amount of heat needed to change from a solid to a liquid

Viscosity resistance of a liquid to flow

Amorphous solid Solid that tends to lose its shape.

adhesion attraction between unlike molecules Ex. glue, tape

Crystal Solid structure with a regularly repeating pattern

attraction between like molecules Cohesion Ex. water droplets stick together… surface tension

Surface tension Force of attraction (cohesion) that occurs at the surface of a liquid

Condensation The changing of a gas to a liquid.

Sublimation The changing of a solid directly to a gas without being a liquid.

Evaporation The changing of a liquid to a gas at the surface. (Can occur at room temperature or cool temperatures.)

Heat of Vaporization Amount of heat needed to change from a liquid to a gas

Vaporization The changing of a liquid to a gas at the boiling point by adding heat.

Good luck on this week’s test!!!

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