Red cabbage

1 Stomach acid 

2 Vinegar

3 Coffe

4 Water

5 Baking soda

6 Bleach

7 Lemon 

8 Soap

1. Red Cabbage 

2. Knife

3. Bunsun Burner

4. Beaker

5, Water 

1. Cut the cabbage

2. Place the cabbage in the baker 

3. Once the cabbage has boiled for  2 minutes and leave it down to cold

4. Once it has cooled remove the cabbage leaves and use the red water as in indicator.