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In this investigation I am going to find out the principles of osmosis and what factors can affect osmosis.
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PLAN In this investigation I am going to find out the principles of osmosis and what factors can affect osmosis. Osmosis is the movement of water from a dilute solution (high water potential) to a solution of greater concentration (low water potential) across a semi-permeable membrane. The water stops moving when the concentration of solution each side of the membrane are equal. This diagram shows what happens in osmosis. The water molecules move across the semi-permeable membrane from the low sugar concentration solution to the high sugar concentration solution. Water molecules are small and can travel through semi-permeable membranes this is the theory of free water particles, but sugar molecules are much bigger and cannot travel through a semi-permeable membrane. The water molecules move across the semi-permeable membrane by diffusion. Diffusion is the movement of particles of gas, solvent or solute, but water molecules in this case, from an area of high concentration...
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