What Is the Difference Between Osmosis and Diffusion?
Osmosis is just the water-focused cousin of diffusion. Osmosis needs a membrane; diffusion doesn't care and lets any molecule party anywhere!
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Osmosis is the movement of water through a semi-permeable membrane from low to high solute concentration, while diffusion is the movement of molecules from high to low concentration in general.
Osmosis is water-specific, but diffusion is all-inclusive for molecules. Think of osmosis as the VIP water-only event at the membrane club.
It's pretty simple: Osmosis is the water version of diffusion that crosses a semi-permeable membrane.
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