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Learners are challenged to discover the relative densities of colored liquids to create a rainbow pattern in a test tube.

In "Chemistry is Colorful" learners explore different materials through paper chromatography.

Learners observe different light sources, outdoors and indoors, using prism glasses (diffraction glasses) and color filters.

In this activity (5th activity on the page), learners explore how what you see influences taste. In experiment 1, learners taste five sodas, one of which is clear soda with orange food coloring.