All+About+Osmosis

__What //exactly// is osmosis?__




 * __//**Osmosis**//__ is the diffusion of water through a semi-permeable membrane.
 * As in other forms of diffusion, water molecules move from an area of higher concentration to an area of lower concentration until they reach equilibrium (when the concentration of molecules is equal on both sides of the membrane).
 * Click here to see an animation showing how osmosis works. There is a self-quiz beneath the animation that you can take to test your knowledge.

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 * Click here to learn all about cell membranes and cell transport. (More information about osmosis can be found by scrolling a quarter of the way down the page.)
 * Below, you'll find some helpful videos displaying osmosis in an egg demonstration. Try this at home if you can!
 * Complete the worksheet at the bottom of this page to further test your "osmosis know-how."

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===Still having trouble with diffusion and osmosis? Watch the following video, showing an easy-to-understand explanation. ===

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