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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.

Young learners investigate and observe the properties of three liquids -- water, vegetable oil, and corn syrup. They use their senses to collect data and ask and answer questions.

In this activity, learners cook amino acids and sugar to explore the range of aromas released.

This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.

Are balloons porous or non-porous? In this activity, learners watch an entertaining Mr. O video and conduct a simple experiment to find out.

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 this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon.

In this activity, learners use household materials to investigate and explore their ability to smell an odor.

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