Materials Needed
-Milk (preferably whole milk)
-Food coloring
-Dish soap
-A shallow dish or plate
-Cotton swab
Instructions
- Pour milk into the shallow dish, covering the bottom.
- Add a few drops of different food coloring to the milk.
- Dip a cotton swab in dish soap, then gently touch it to the surface of the milk.
- Watch as the colors swirl and mix!
Explanation: The dish soap breaks the surface tension of the milk and interacts with the fat molecules, causing the food coloring to swirl.