1. Fill in the Following Table As You Do Your Experiment. Remember to Include the Appropriate

1. Fill in the following table as you do your experiment. Remember to include the appropriate units for the concentrations and amounts of the unknown.

Cup Label / Concentration of the Solution / Amount of the Unknown in Cup S
A / 1 tsp/cup / 1/10 tsp
B / 1/10 tsp/cup / 1/100 tsp
C / 1/100 tsp/cup / 1/1000 tsp
D / 1/1000 tsp/cup / 1/10,000 tsp
E / 1/10,000 tsp/cup / 1/100,000 tsp
F / 1/100,000 tsp/cup / 1/1,000,000 tsp
G / 1/1,000,000 tsp/cup / ------

2. Do the taste test on another group’s solutions. Taste the solutions in both small cups (one contains only water and the other contains the unknown). Put a check mark in the column next to the cup label if you can taste the unknown. Put an “X” in the appropriate column next to the cup label when you consider the solution to be undrinkable. The answers below are examples only.

Cup Label / I can taste the unknown. / The solution is undrinkable.
G
F
E
D / Ö
C / Ö
B / Ö / X
A / Ö / X

The unknown in the solution I taste tested is _salt (or sugar)_.

3. Write your conclusions about how this experiment relates to pollution in the box below.

4. Fill in the following table with things you know about acids and bases.

Common Examples You Know / Common Characteristics You Know
Acid / vinegar, lemon or other citrus juices / sour taste, burning sensation
Base / ammonia, lye, Drainoä / slippery feel

5. Fill in the following table matching the type of substance with the color of the cabbage juice indicator.

Type of Solution / Cabbage Juice Color
Acid / bright pink
Base / green
Neutral / dark blue

6. In your own words, describe how acid rain is formed.

Materials and the Environment, Part 2 Page 2