4D60.61: DIFFUSION - FOOD COLOR IN WATER

PURPOSE: To demonstrate diffusion.

DESCRIPTION: A drop of food coloring is placed gently into a beaker of water. In a few minutes the food coloring will diffuse through the entire beaker of water. It might be argued that residual currents in the water account for much of this " diffusion." Maybe so, but it gets the point across even if you mention this.

SUGGESTIONS:

REFERENCES:

EQUIPMENT: Beaker of water, food coloring.

SETUP TIME: 5 min.


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