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In this activity, learners discover the primary physical properties used to separate pure substances from mixtures.

In this chemistry activity, learners use spaghetti to explore density and chemical reactions.

In this hands-on activity, learners make the world's simplest Cartesian diver, using only a plastic bottle, some water, and a condiment packet.

In this chemistry demonstration, learners investigate the rule "likes dissolve likes" by combining three, immiscible liquids to create a colorful density column.

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