Penny Lab
For a science project, we were supposed to see how many drops of water we could fit onto the surface of a penny, and to predict the number of drops before the experiment. To start this experiment, I needed a penny, a piece of paper, and a plastic water dropper. Then I estimated the number of drops I thought it would take and then start to drop droplets of water onto the penny. In my experiment it took about 21 drops for the water to overflow. And the predicted number of drops for my particular experiment was approximately 10 drops of water, which was obviously off. I believe that it took 21 drops because of surface tension, caused by the polar molecules pulling on the other. The surface tension on the penny caused the water to pull into a rounded shape before it spilled.
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