Osmosis 1

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  • osmosis
    • osmosis is a special case of diffusion
      • osmosis is the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration.
    • partially permeable membrane is a membrane with holes in it. only small molecules can pass through the holes like water
    • the water molecules pass through both sides of the membrane because water molecules move randomly.
    • because there are more water molecules on one side than the other there is a steady net flow of water into the region with less water molecules.
    • this mean strong sugar gets more dilute as the water is trying to even up the sides.
    • osmosis is a type of diffusion- passive movement of water particles from an area of high water concentration to an area of low water concentration


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