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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

In this activity, learners test what happens when they put baking power on different frozen liquids.

This activity teaches combustion as the interaction of a fuel source and oxygen.

In this activity, learners make a yeast-air balloon to get a better idea of what yeast can do. Learners discover that the purpose of leaveners like yeast is to produce the gas that makes bread rise.