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Jessica Scott 5S. Investigation of Osmosis. Skill Area P: Aim: To investigate osmosis. The student is going to see what happens to the weight of a potato when it is placed into different solutions of sodium chlorides and water. Prediction: The student predicts that potato placed in distilled water will undergo a gain in weight and potato placed in salt solution will lose weight. Potato placed in mixed concentration will have no change in its weight. This prediction has been made using scientific knowledge of the special type of diffusion known as osmosis. In osmosis, each individual cell is surrounded by a cell membrane. The cell membrane allows small molecules to pass through it, but not large ones. Osmosis is the movement of water molecules from an area of high concentration (weak solution) to an area of low water concentration (strong solution) through a partially permeable membrane. Water moves in both directions to...

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