Here's what you'll need:
- Milk (it is recommended that you use 2%)
- A bowl
- Food coloring
- Dish Soap (it is recommended that you use Dawn)
Now let's get started:
- Start by filling the bowl with milk and waiting for all the bubbles to go away.
- Put a large amount of food coloring in the center of the milk.
- Take Q-tips and dip them into the dish soap. Then put them in the middle of the bowl for 15 seconds.
- Watch as the food coloring expands on the surface of the milk.
So what about the science? Well here it is: milk contains protein and really small amounts of fat in it. Both proteins and fat are sensitive to chemical changes. The chemicals in the dish soap weaken the chemical bonds that hold the protein together in the milk solution and the food coloring allows us to visually see the changes in the protein molecules. Likewise, the soap molecules cause the fat in the milk to mix and swirl until the fat has been distributed across the entire amount of the milk.
Watch Dr. Mad Science do it!