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In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.

In this activity about olfaction (7th activity on the page), learners use natural ingredients to concoct their own perfume.

In this two-part activity, learners use household items to smell the difference between some stereoisomers, or molecules which are mirror images of one another.

In "Chemistry Makes Scents," participants use their noses to distinguish between chemicals with very similar structures.