Video 1: Atomic Structure (2:01)

Video 2: Ionic vs. Covalent bonds (2:13)

Video 3: Electronegativity (2:07)

Video 4: Polarity and Hydrogen Bonds (2:32)

Video 5: The Properties of Water (4:12)

Video 6: Water Cycle (2:47)

Video 7: The Earth's Water Cycle (0:43)

Figure 1: Water cycle

Video 8: Acids, Bases and pH (1:59)

Figure 2: pH Scale

Video 9: Acid Rain (1:43)