GRAND RAPIDS, Mich. — Today is National STEM/STEAM Day, a day to celebrate science, technology, engineering, arts and math.
Meteorologist Laura Hartman has a simple chemistry experiment you can do at home to celebrate, called Magic Milk. All you need are a few household ingredients.
- Flat bottom dish
- Whole milk
- Dish detergent
- Food color
- Cotton swabs
Pour milk in the dish, enough to cover the bottom completely. Add drops of food coloring to the milk. Using a cotton swab, dip it into the dish detergent and then into the milk. The food coloring will shoot away from the cotton swab and create swirling colors.
Milk is made up of proteins, minerals and fats. The dish detergent will attach to the fat in the milk and break down those molecules. The food coloring allows you to see the movement of the molecules at work.
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