The useful idea
- The useful idea
Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration.
- How it works
Diffusion is driven by a gradient in Gibbs free energy or chemical potential.
- Why it matters
It is possible to diffuse "uphill" from a region of lower concentration to a region of higher concentration, as in spinodal decomposition.
Why this matters
Look for Diffusion the next time you notice this pattern in everyday life.
Try this
Look for Diffusion the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Diffusion?
- Why it matters
- How it works
- The useful idea — correct
Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration.