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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 mix a variety of substances with red cabbage juice. The juice changes color to indicate whether each substance is an acid or a base.

In this activity, learners make their own bath bomb fizzies and experience what happens when they mix a base and an acid.

Learners investigate signs of a chemical reaction when they mix vinegar and baking soda. In addition to a gas being produced, learners also notice the temperature decreases.

In this activity, learners will experiment with changing flower colors. Learners will investigate the effects of acids and bases on flower colors.

Learners use their knowledge of color changes with red cabbage indicator to neutralize an acidic solution with a base and then neutralize a basic solution with an acid.

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

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

In this engineering activity, learners test the stability of towers they build out of cups, discovering that structures with more mass in the base are more stable.

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

In this activity, learners make film canister rocket ships. A fin pattern is glued onto the outside of the canister, and fuel (water and half an antacid tablet) is mixed inside the canister.

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

In this introductory activity and demonstration, learners are introduced to the concept that different substances react chemically in characteristic ways.

In this physics activity, learners will investigate the strength of egg shells.

In this experiment, learners test multiple food items to see if they are an acid or base using an indicator solution created with red cabbage.

In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires.

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