This weekend the boys and I enjoyed an experiment that was first introduced to us by a good friend. 

I like to think of it as a cool art and science lesson in one. I know we enjoy the pictures that are created in the milk when we do this.

You will need….

  • A shallow dish of full fat milk
  • cotton buds
  • washing up liquid
  • food colouring
First pour some milk in to a shallow dish so that it just covers the bottom. Add some food colouring to the milk in individual spots.

Use a cotton bud to dip in to the washing up liquid.

Hold the end of it in to a spot of colour and watch the colour move.

The colour will continue to move around the dish and mix with the other colours. Try different areas of the dish until the reaction stops happening.

The milk contains protein and the washing up liquid reacts with this protein, altering the shape of the molecules which makes them move around. When the washing up liquid reacts with the fat, Micelles are created and as these are created the pigments in the food colouring gets moved around the dish. These micelles and the things that helps the washing up liquid lift fat from greasy, dirty dishes.

Its a cool 5 minute experiment to do over the holidays and all ages are equally amazed at the colour moving around as if by magic! You can creat some cool swirls of colour and patterns by placing the colour spots closer together and placing the washing up liquid in the middle.

Today’s play, meets the following EYFS Prime and specific areas
  • Communication and Language
  • Understanding the World
  • Physical development

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