Science Resources: Drops on a Penny

Drops On A Penny Experiment - Printable Scientific Method Activity

Drops on a Penny

This fun scientific method activity deals with the surface tension of water and whether it is affected by adding soap. The activity builds on the cool science experiment where kids try to add as many drops of water as possible to the surface of a penny. The surface tension of water allows a surprisingly large number of water droplets to stick together! Kids then predict and observe what happens when soap is added to the equation.