+15 science points on completion
Dr. Beaker · Lab Chemist
Great choice, Junior Scientist! Today we're doing the "Purple Cabbage pH Indicator" experiment. Let me explain what we'll discover together. Purple cabbage has a pigment that changes color with acids (turns pink/red) and bases (turns blue/green). Lemon juice is an acid and baking soda is a base!
Ask an adult to help boil purple cabbage in water, then strain the purple liquid into a cup.