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To investigate the effect of different concentration of sucrose on osmosis in potato chips
Member rating: No Rating | Words: 3000 | Submitted: Tue Feb 05 2008
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Biology practical coursework Aim of investigation: To investigate the effect of different concentration of sucrose on osmosis in potato chips. Independent variables: The independent variable is the concentration of sucrose solution. How will the independent variables be controlled (Details of dilutions)? Molarity of solution/M Amount of sucrose solution/cm³ Amount of water/cm³ 1.0 10 0 0.8 8 2 0.6 6 4 0.4 4 6 0.2 2 8 0.0 0 10 Dependant variable The dependant variable is the size of the potato chip (mass and length) How we will measure the dependant variables * Length ?The length will be measured using simply a ruler to nearest mm * Mass ?The mass will be measured on a balance to nearest 0.5g. The potato chips will be blotted first to remove excess sucrose solution outside of the chip, to obtain more accurate results, as the excess mass of any solution will mean the chip weighs slightly more than it would normally without excess solution. Variables and why they need to be controlled Temperature- The temperature will have to be controlled because at a...
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