Chapter 3

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Evaporative Cooling • Evaporation is transformation of a substance from liquid to gas • Heat of vaporization is the heat a liquid must absorb for 1 g to be converted to gas • As a liquid evaporates, its remaining surface cools, a process called evaporative cooling • Evaporative cooling of water helps stabilize temperatures in organisms and bodies of water © 2011 Pearson Education, Inc.
Floating of Ice on Liquid Water • Ice floats in liquid water because hydrogen bonds in ice are more “ordered,” making ice less dense • Water reaches its greatest density at 4°C • If ice sank, all bodies of water would eventually freeze solid, making life impossible on Earth © 2011 Pearson Education, Inc.
Page 1 and 2: LECTURE PRESENTATIONS For CAMPBELL
Page 3 and 4: Figure 3.1
Page 5 and 6: Figure 3.2 δ - δ + Hydrogen bond
Page 7 and 8: Concept 3.2: Four emergent properti
Page 9 and 10: Figure 3.3 Adhesion Two types of wa
Page 11 and 12: • Surface tension is a measure of
Page 13 and 14: Moderation of Temperature by Water
Page 15 and 16: Water’s High Specific Heat • Th
Page 17: Figure 3.5 Santa Barbara 73° 70s (
Page 21 and 22: Figure 3.6a
Page 23 and 24: • Water is a versatile solvent du
Page 25 and 26: • Water can also dissolve compoun
Page 27 and 28: Hydrophilic and Hydrophobic Substan
Page 29 and 30: • Molecular mass is the sum of al
Page 31 and 32: • Water is in a state of dynamic
Page 33 and 34: • Concentrations of H + and OH -
Page 35 and 36: The pH Scale • In any aqueous sol
Page 37 and 38: Figure 3.10 pH Scale 0 1 Battery ac

Chapter 3

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