Magic cabbage experiment


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Invite your friends over and surprise them with this colourful magical experiment.

Getting ready

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You will need:

  • knife
  • two measuring jugs
  • half a red cabbage, shredded
  • a kettle
  • a strainer
  • 5 clear glasses
  • a teaspoon
  • bicarbonate of soda
  • vinegar
  • pencil

Step 1

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First, put the cabbage in one of the jugs. 

Boil some water in a kettle then ask an adult to pour the water into the jug.

Leave it to cool for 15-20 minutes.

Step 2

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Next, pour some of the cabbage water through a strainer into the other jug.

Add some cold water until the liquid is purple but transparent.

Step 3

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Now, line up the five glasses in front of you and add different levels of cabbage water.

Step 4

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Add half a teaspoon of bicarbonate of soda into the third glass and one teaspoon to the fourth glass.

Step 5

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Now, add a drop of vinegar to the second glass and one teaspoon of vinegar into the fifth glass.

As if by magic the colour of the cabbage water will change.

Step 6

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Why not end your experiment with some magical music?

Use a pencil or any wooden stick to gently tap the glasses and make up a song as you play.

Top tip

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Why not use some of the cabbage left over from this experiment to make a coleslaw topping for a baked potato?

Mix the shredded cabbage with a grated carrot and a tablespoon of low-fat yoghurt.

Back to Know it!