What you need:
Milk
Dinner plate
Food colouring
Dish wash soap
Cotton buds
Method:
1. pour enogh milk into the plate to completely cover the bottom. It should be about 1-2cm deep.
2.Add 1 drop of food colouring - red, blue, yellow and green. Keep the dots close together Do not stir!
3.Dip the cotton bud in the detergent and gently touch the milk. Hold it there for 15 - 20 seconds.
4. Watch what happens...
How does it work?
Milk contains protein and tiny amounts of fat in it. Both
fat and protein are very sensitive to chemical changes. The chemicals in the
dish soap weaken the chemical bonds that hold the protein together in the
milk. The food colouring allows us to see the changes in the milk. Also,
the soap causes the fat in the milk to mix and swirl until the fat has
been distributed across the entire amount of milk.
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