Red cabbage and some other plants contain a pigment called anthocyanin that gives our cabbage it’s colour. This pigment has the ability to change colour and is an example of a pH indicator- something that can detect acids and bases. For this activity you’ll need about 4 red cabbage leaves, some water, a blender, smoothie maker or stick blender, some white vinegar or lemon juice and bicarbonate of soda, glasses or small white bowls, and a variety of other kitchen items for testing such as lemonad

A quite dramatic colour change made this chemistry experiment really mesmerizing for Alex. After blending a few red cabbage leaves I poured purple cabbage juice into glasses. I added a little too many leaves, so I had to add more water to glasses for clearer colours. Then Alex started adding lemon juice, vinegar, baking soda and washing powder to separate glasses, leaving middle glass untouched. The purple cabbage juice turns red when it mixes with acids and turns blue/green when it mixes with b