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Ch. 8 - Solids, Liquids, & Gases

MATTER. Ch. 8 - Solids, Liquids, & Gases. II. Changes in State (p.224-227) Phase Changes Heating Curves. A. Phase Changes. Melting solid to liquid Freezing liquid to solid melting point = freezing point. A. Phase Changes. Vaporization (boiling) liquid to gas at the boiling point

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Ch. 8 - Solids, Liquids, & Gases

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  1. MATTER Ch. 8 - Solids, Liquids, & Gases II. Changes in State (p.224-227) Phase Changes Heating Curves

  2. A. Phase Changes • Melting • solid to liquid • Freezing • liquid to solid melting point = freezing point

  3. A. Phase Changes • Vaporization (boiling) • liquid to gas at the boiling point • Evaporation • liquid to gas below the boiling point • Condensation • gas to liquid

  4. A. Phase Changes • Sublimation • solid to gas • EX: dry ice, freeze drying, iodine

  5. A. Phase Changes

  6. B. Heating Curves • Kinetic Energy • motion of particles • related to temperature • Potential Energy • space between particles • related to phase changes

  7. Gas - KE  Boiling - PE  Liquid - KE  Melting - PE  Solid - KE  B. Heating Curves

  8. B. Heating Curves • Heat of Fusion • energy required to change from solid to liquid • some attractive forces are broken

  9. B. Heating Curves • Heat of Vaporization • energy required to change from liquid to gas • all attractive forces are broken • EX: steam burns, sweating, and… the drinking bird HEATING CURVE

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