<<< previous  | | The blue liquid turns red! Lemon juice is an acid and acids turn the cabbage juice a pinky-red colour. | | | | |  | | Next, try adding a little of the bicarbonate of soda. Give the mixture a shake again and see what happens. | | | | |  | | The liquid turns blue again! Bicarbonate of soda is alkaline and when you mix it with water it turns the cabbage juice blue. | | | | |
How about putting in some clear vinegar? Can you predict what happens? Here's a hint - lemon juice is an acid. check your prediction >>> |
