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In this activity, learners investigate diffusion by creating underwater "fireworks" using food coloring, oil and water.

Investigate the interaction of liquids of different densities and experiment with wave patterns with this hands-on activity.

This hands-on activity lets participant explore chemical reactions as they create a soda explosion with lots of bubbles. The bubbles in soda are made of carbon dioxide gas.

In this quick activity, learners break the tension that happens when water develops a "skin." Learners use water, pepper and some soap to discover the wonders of surface tension—the force that attract