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I6-23. Diffusion - Food Color In Water

Purpose

To demonstrate diffusion.

Equipment

Beaker of water, food coloring.

Images

I6-23_1

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.

 

I. Thermodynamics

I. Thermodynamics

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