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

Learners observe working lava lamps to understand how they work (included in PDF link).

Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water.

Learners create beautiful fluid motion. They explore fluid dynamics, surface tension, solubility, and buoyancy while mixing liquids together.