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Biology Coursework: To investigate the factors which affect osmosis (Planning) The aim for this Biology coursework is to investigate hoe the concentration of sodium chloride will affect the mass of potato chips that will be the same length and have same width. The time factor for the chips will be the same to make it a fair test. The main variables throughout the investigation will be the mass, the length and the concentration in which the chips are kept in. Scientific knowledge of osmosis Osmosis is the movement of water particles across a semi permeable membrane, from a dilute solution to a more concentrated solution, until equilibrium is established, i.e. the same number of water particles on either side of the membrane. As the potato cell contains a more dilute solution. Water will pass into the solution to try and balance both things out. If the salt solution inside the vacuoles of the potato...

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