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In this activity, learners cut out a fish and then "paint" it using universal indicator and acids and bases.

In this activity, learners investigate diffusion by creating underwater "fireworks" using food coloring, oil and water.

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

In this activity, learners discover how a cabbage juice indicator helps identify acids and bases, and how iodine indicates the presence of starch.