Materials needed:
1 cup chopped red cabbage
20ml lemon (fresh)
20ml orange juice (fresh)
One Berocca tablet
150ml water
Kettle
Strainer
Timer
3 glasses (clear)
Method:
1. Copy this table (we will be using it to record our results)
2. Boil water in a kettle
3. Put 1 cup of chopped red cabbage slices in a bowl and add the boiling water
4. Wait for 2-3 minutes for the water to turn purple
5. Strain out any red cabbage chunks
6. Divide 50ml of water into 3 glasses
7. In one glass, put 20ml lemon juice and start the timer
8. Record how long it takes from the colour to turn from purple to pink and put it in the table you created above
9. Repeat steps 3 and 4 with the Berocca tablet and the orange juice
Safety for this experiment
Make sure you have parental supervision when boiling the water, cutting the foods, straining red cabbage from the hot water.