Define the terms: (a) semi-permeable membrane (b) osmosis.
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Define the terms: (a) semi-permeable membrane (b) osmosis.
Define the terms: (a) semi-permeable membrane (b) osmosis.
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Answer:
(a) Semi-permeable membrane:
A semipermeable membrane is a membrane that only allows movement of solvent molecules but restrict movement of solute particles across the membrane.
(b) Osmosis:
The process of movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane is called osmosis.
When two nearby concentrations are different, materials will tend to spread out to equalize the concentration. That's why, for example, if you put a drop of food colouring in some water it will gradually spread through the whole water.