Chapter Objectives:

• Explain why evaporation of water is a cooling process.
• Explain why condensation is a warming process.
• Explain why a person with wet skin feels chillier in dry air than in moist air at the same temperature.
• Distinguish between evaporation and boiling and explain why food cooked in boiling water takes longer to cook at high altitudes.
• Explain why water with substances dissolved in it freezes at a lower temperature than pure water.
• Describe how something can boil and freeze at the same time.
• Describe how ice melts under pressure and refreezes when the pressure is removed.
• Describe how a substance can absorb or release energy with no resulting change in temperature.

Chapter Terms:

• evaporation
• sublimation
• condensation
• boiling
• melting
• regelation

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Chapter Outline Framework:

• Evaporation
  • Condensation in the atmosphere
• Fog and Clouds
• Boiling
  • Geysers
  • Boiling is a Cooling Process
  • Boiling and Freezing at the Same Time
• Melting and Freezing
  • Regelation

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