A simple prediction in two sentences, Prediction to the following question How does soap affect the number of water drops that the surface of a penny can hold, compared with the number of drops that a penny without soap can hold?
Soap reduces the surface tension of water, allowing the penny to hold more drops with soap compared to without soap. The soap molecules disrupt the cohesion between water molecules, making it easier for the drops to spread out and cover a larger area on the penny's surface.
