Diffusion

Interactive simulations and activities for learning about diffusion

Diffusion is the natural movement of molecules spreading out from higher to lower concentration. Molecules diffuse through collisions due to random molecular motion. Diffusion is always happening, even when a system appears to have reached equilibrium, because molecules are always moving. Several factors affect diffusion: concentration, surface area, molecular pumps, temperature, and molecular mass.

Diffusion

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Diffusion Resources

Explore the process of diffusion using the free educational simulations and activities below. These scientifically accurate models are great for the classroom, homework assignments, or independent learning. Use them to answer the question, "What is diffusion?"

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