PROBLEM: How can you remove oil from a spill that has occurred in water?

PREDICTION:

EXPERIMENT 1.
MATERIALS: plastic vials marked in fourths, ice water with yellow coloring, hot water with blue coloring, salt water with red coloring, oil

PROCEDURE:

1. Make a prediction of how you think the materials will layer. Draw a picture of your prediction in the space below.  
     
2. Add each material to your vial in the order you predicted.
     
3. Add them slowly, one at a time.
     
4. Did it work? If not, try it again.
     
5. Make a drawing of the results and label the different layers, use colored pencils or crayons.

OBSERVATIONS:

EXPERIMENT 2.
MATERIALS AND PROCEDURE: Using a small dish of water, pour 1 tablespoon of oil onto it and try to figure out the best way to clean the oil spill. You have three items with which to clean it: soap, stick (non-absorptive), and paper, cotton swabs or some other absorptive material.
  

CONCLUSION: Which item cleaned the spill? (or could you  clean it?)
  
  
  Describe how you were able to remove the oil.