Mrs Wigglebum's Magic Milk: February Science
This February, try Mrs. Wigglebum's Magic Milk experiment, a holiday take on Colorful Caroline's Exploding Milk. What could possibly make the colors move like that?
Milk is mostly water, but also contains vitamins, minerals, proteins, and tiny droplets of fat. When you add soap, the weak chemical bonds that hold the proteins in the milk have changed. The molecules of protein and fat move away from each other in all directions. The food color molecules are shoved everywhere, too. Another reason you see the exploding colors is due to surface tension.
Materials:
Milk (whole)
Dinner plate, saucer, or pie pan (clear is best)
Food coloring (different colors)
Dishwashing soap (we prefer Dawn®)
Cotton swab