Detection of acids and bases using red cabbage juice
What substance can be added to change the color of red cabbage juice? What color does it turn, and what pH range does this color indicate?
The photos that have been matched can be dragged back or moved among the placeholders. The solution can be shown at any time during the exercise. The current status is preserved, which allows the exercise to be continued when the solution is hidden again. The matches can be evaluated by clicking the respective “Check” button. Any incorrect matches will be reset and can be matched again.
Information and ideas:
The students can test additional everyday products for their pH value using red cabbage juice as an indicator. For example, what makes red cabbage juice turn yellow, and what pH value does this color indicate?