TIGER

12.1 No Gravity
12.2 Liquids and Solids
12.3 Separating Molecules: Melting and Boiling
12.4 The Forces That Hold Usand Everything ElseTogether
12.5 Smelling Molecules: The Chemistry of Perfume
12.6 Chemists Have Solutions
12.7 Water: An Oddity Among Molecules
12.8 Water: Where Is It and How Did It Get There?
12.9 Water: Pure or Polluted?
12.10 Hard Water: Good for Our Health
12.11 Biological Contaminants
12.12 Chemical Contaminants
12.13 Ensuring Good Water Quality: The Safe Drinking Water Act
12.14 Public Water Treatment
12.15 Home Water Treatment