DIY Red Cabbage PH Indicator
If you are looking for a cool and simple science experiment to do with your kiddos this one is sure to impress. With just a few supplies you already have in your kitchen pantry you can teach your kids about acids and bases by making your own ph indicator using none other than red cabbage juice. Red cabbage juice contains a pigment called Anthocyanin. This pigment creates a natural ph indicator that changes colors when you add an acid or base. Acidic solutions change the cabbage juice from purple to red whereas basic solutions will turn green or blue. Follow the instructions below for this fun color changing science experiment! * Parents please supervise your children at all times*
- 1/2 a cabbage
- 4-5 glass cups or jars
- 1 Lemon / Lime
- Baking soda
- Other acids and bases (ie. cream of tartar, powdered laundry detergent, citric acid, windex, dish soap)
Start by boiling red cabbage in a large pot for approximately 10 minutes. Allow the liquid to cool before handling. Pour the liquid into several cups and label them with each acid and base you are testing.
Now for the fun part! Test the acids and bases by mixing the solutions with the cabbage juice. Ask your child to determine which solution is an acid or base.