Magic Milk kids science experiment on surface tension is a fun way to promote STEM education in preschoolers and kindergarteners.
Magic Milk STEM kids activity is absolutely mesmerizing to watch! Besides, this science experiment will take you less than five minutes to set up since you will be using items around your kitchen. Most importantly, this simple kids STEM experiment will expose your child to the science of surface tension with no specialized equipment!
WHAT you’ll need for this STEM Kids Science Experiment:
- a shallow plate or a dish
- cream, half-and-half or full-fat milk (we tried this experiment with skim milk and it did not work)
- food coloring
- liquid soap
HOW to conduct this Magic Milk Surface Tension STEM Activity:
First, pour the cream into the plate. I am using a shallow plate, this way I would not have to use a lot. Next, make sure that the cream covers the bottom of the plate. Thereafter, add a few drops of food coloring. Do not add too much coloring as you will end up with the color brown instead of a rainbow. Lastly, dip a Q-tip into a dish-soap and submerge that Q-tip into milk. Observe what happens. Most importantly, bring the attention of a young scientist to the magic of surface tension!
Revealing the Science mystery of Magic Milk Experiment:
The molecules of the milk pull each other together which stretches the surface of the milk into an invisible skin. However, the liquid soap breaks the surface tension, and thus the milk molecules move apart. This effect is called surface tension. Adding liquid soap weakens the invisible skin of this surface tension and makes the molecules move around. This makes the food coloring mix together.
Want more STEM Kids Science Experiments?
Please, always supervise your children.