Diffusion and Mixing
Learning Objectives
- Students will be able to define diffusion and explain the mechanism at the particle level
- Students will be able to identify factors that affect the rate of diffusion
- Students will be able to distinguish between diffusion and osmosis
Core Concepts
- concentration_gradient
- random_motion
- osmosis
- semipermeable_membrane
- rate_of_diffusion
Formulas
$$R \propto \frac{A \cdot \Delta C}{d}$$
Fick's Law of Diffusion
Interesting Fact
Diffusion occurs even when systems are at equilibrium; particles continue moving randomly but with no net change in concentration
Key Scientist
Thomas Graham
Studied diffusion of gases and developed Graham's law
Modern Research
Drug delivery systems exploit diffusion principles; understanding diffusion rates is essential for pharmacology, pollution control, and materials processing.
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