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Red Cabbage Chemistry

Red Cabbage Chemistry

Grades 7-12

Why does red cabbage work as a pH indicator? Is it a reliable and accurate indicator? Do all the acids or bases change the indicator the same color? Does adding a larger quantity of an acid or base change the color more? In this lesson, students will explore acid and base by using red cabbage juice as a pH indicator to test the pH of common household liquids.

Download the full lesson here.



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