Red cabbage color-change test

How to make it

1. 

   1

   Chop the cabbage

   Grown-up step: chop the cabbage into small pieces and put it in a heat-safe bowl.

2. 

   2

   Make the juice

   Grown-up step: pour hot water over it. Let it sit 20 minutes, then strain out the cabbage.

3. 

   3

   Fill the cups

   Pour about 1/2 cup of purple juice into each cup. Label each cup with what you'll add.

4. 

   4

   Add the tests

   Add a spoonful of a different liquid to each cup. Keep 1 cup plain to compare.

5. 

   5

   Watch the colors

   Vinegar and lemon turn it pink or red. Baking soda turns it blue or green. Write down every color.

6. 

   6

   Talk about why

   Red cabbage has a natural dye that changes shape in acids and bases. Each shape reflects a different color. Acids go pink, bases go green.