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In this chemistry demonstration, learners will discover that phenolphthalein is a chemical that displays different colors depending on the acidity or basicity of the environment.

In this fun chemistry activity (page 3 of the pdf), learners use cabbage juice to determine the pH of several substances.

In this activity, learners test the pH of safe liquids available at home by creating a pH indicator from mashed blueberries.

In this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas.

In this chemistry activity, learners will test the pH of various foods and household substances using cabbage.