We’ve nearly recreated The Starry Night with this colour changing milk experiment, what will your kids recreate? This is a fun and easy experiment for children to understand how micelles work while turning their experiments into art pieces!
You will need:
Washing up liquid
A cotton bud or a toothpick
A container such as a small plate
Pour a fine layer of milk into your container.
With the pipette, add some drops of different food colouring to the milk. Why not play around and create shapes?
Take your toothpick and add some washing up liquid to one of its ends.
Dip the end of the toothpick in the milk where the food colourings are. See how the colors are spreading out. You can now create some beautiful art in a Van Gogh style thanks to this colour changing milk experiment!
The science bit:
The washing up liquid is fat repelling, that’s why it’s a detergent and that’s how it cleans up grease.
Milk is made of fat, so that when you dip some washing up liquid into the milk, it will repel the fat in the milk and make it move away.
Since the food colouring is on the surface of the milk, it’s moving along with the milk away from the washing up liquid.