About

This activity addresses the topic of acids and bases. It uses a dye found in red cabbage as a pH indicator. Red cabbage turns red in the presence of acids, purple when neutral, and blue/green in the presence of bases. Kids will see this color change happen as we make Rainbow Juice.

(http://images.flatworldknowledge.com/averillfwk/averillfwk-fig16_013.jpg )