This experiment investigated how surface tension and cohesion of the penny applies to how much water can fit on the penny, of the 2 different test solutions.We studied the problem by doing 4 trials without the testing liquid penny, and 4 trials with the testing liquid penny, we dropped as much liquid as we could on each of them, counting each drop until it overflowed. Results showed that the penny which had no testing liquid on it could hold a much larger amount of water droplets on the surface for a greater amount of time. This is shown by the penny with tap water holding an average of 57.25 drops, while the soapy water penny could only hold an average of 19 droplets. The hypothesis was supported that the penny with regular water was able to hold more than the one with soap. Cohesion and surface tension came into play by showing how some substances(soap) can disrupt or break the cohesive force of water. How clean the penny was could disturbed the surface tension, and some drops may be bigger than others on the penny. ensure all the pennies are cleaned the same amount, using a more precise tool to drop the droplets may improve results.