In this experiment, we demonstrate the power of surface tension and soap properties with a fascinating visual display on the surface of white milk. You'll need just a few items that can be found around the house for this experiment, and it only takes a few minutes.
What is happening here is that the soap is interacting with the fat in the milk and is disrupting the surface tension. When this happens, the milk begins to move about rapidly and the food coloring comes along for the ride to show you visually how the milk is doing.
This is a simple, easy, and fun experiment that shows how surface tension works along with how soap can interact with a liquid to give impressive results!