ChemCom
Water Testing and Purification Review Outline
A. Water Use and Supply
1.
2.
3.
4.
direct vs. indirect uses
individual vs. regional use
hydrologic cycle
locations on earth (ice caps, etc.)
B. Mixtures
1. homogeneous - solution
2. heterogeneous
a. colloid
1. Tyndall effect
2. small particles that cannot be filtered
b. suspension
1. Tyndall effect
2. settling out
3. larger particles that can be filtered
C. Our Water
1. dissolved oxygen
a. aeration
b. effects of dissolved oxygen levels on life
2. heavy metal ions
a. identify
b. sources
c. individual effects
3. hard water ions
a. identify
b. sources
c. effects
d. water softening
4. acidity
a. pH scale
b. normal levels
c. sources of acids and bases
d. effects
D. Purification and Treatment of Water
1. municipal water treatment
2. municipal water purification
3. natural purification
E. Lab Activities
1. foul water purification
2. ion testing
3. water softening
4. Tyndall effect