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In this activity on page 2 of the PDF, learners discover how color changes can help scientists distinguish between acids and bases.

Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.

In this online interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral.

In this chemistry challenge, learners combine acids and bases in a universal indicator to create five different colors.

In this activity, learners use detergent solution to compare two solutions containing vinegar and cream of tartar.