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Biology coursework Osmosis in potato chips Becky Andrew 10T Preliminary Experiment to investigate Osmosis 1M Sugar 50:50 0M (water) Initial mass 2.40 2.05 2.34 Final mass 2.01 1.85 2.43 Change in mass -0.39 -0.21 0.09 % change in mass -12.5% -10.5% 3.84% Evaluation From doing our preliminary experiment it enables us to gain a better result for our real experiment. From this experiment we have learnt a few things through trial and error, for example. If we had used a wider variety of concentrations, our results would have been more accurate. By using a syringe to measure the solution we would have also got a more accurate result. We could have also weighed the potato chips more accurately so they were roughly the same size with no skin. Also we could have done the experiment a couple of times to get better results. The chip that was soaked in water gained weight, becoming turgid. The chip in sucrose lost weight and the chip in equal sucrose: water also lost weight. Method In this experiment I will...

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