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Learners apply their knowledge from a previous study to identify different liquids--water, corn syrup, and vegetable oil.

This is a quick activity (on page 2 of the PDF under Stained Glass Activity) about the "Tyndall effect," the scattering of visible light when it hits very small dispersed particles.

This is a chemistry lab activity about solutions (page 7 of the PDF). Learners see firsthand how chemicals in a solution can combine to form an entirely different substance.

In this challenge, learners have to figure out in what order to combine five solutions to change the color from clear, to yellow, to blue, and back to clear.

In this activity, learners apply a dissolving test to known crystals to identify the unknown. Since the unknown is chemically the same as one of the known crystals, it should dissolve similarly.

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

In this activity, learners make colored sugar and add it to water, alcohol, and oil to discover some interesting differences in dissolving.