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This Color Changing Milk Science Experiment is a fun activity to do with kids of all ages.

What we need for this experiment:
Dinner Plate or bowl
Milk
Liquid food coloring (Red, Green, Yellow and Blue)
Cotton Swab and a piece of cotton
Liquid dish soap

Scientific background: Surface tension is an interesting concept, like molecules like to stick together. Milk has surface tension, just like water, but unlike water, it is high in fat and is solid colored. As the dye is less dense, it does not mix into the milk unless stirred. It remains separate. Dish soap breaks down the fat of the milk and decreases the surface tension in milk.


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