Materials: Faucet with running water Small plastic hair comb or latex balloon Bowl or cup to hold water Small paper clip Towel (to clean up your mess!) Procedure: Part I: Can you get it to float? Fill a cup or bowl one-half to three-quarters full of water. As gently as possibly, try to lay a paper clip on the surface of the water. Can you get it to float? See how many paper clips you can get to float on the water. If you have any liquid soap or detergent available, add a small amount to the water. Did anything happen to the floating paper clips? Part II: Can you bend water? Rub the plastic comb or inflated balloon back and forth in your hair or on a wool sweater to build up a static charge. Turn on the faucet so that a narrow but steady stream of water is flowing. The stream of water should only be about 1 to 2 mm across but flowing steadily. Move the teeth of the comb, or the latex balloon, close to the stream of water without actually touching the water. As you approach the water, you should notice a bend in the stream of water. Does the stream bend toward the object or away from it? If you do not see a bend in the stream, repeat step 1 and try again. Now experiment on your own. Adjust the flow of water or change the distance between the comb or balloon Analysis and Reflection Questions: For each of your molecular models, answer the following questions. Paper clips have a greater density than water, so why can they float on the water's surface? When you added soap to the water, what happened to the paper clips? Explain their behavior in soapy water. Does adjusting the flow of water or changing the distance between the comb or balloon and the stream affect the bend in the water? Does a balloon affect the water differently than a comb? What other changes or variables can you test in part II?