... it a fair test is to keep the same sizes of each potato, the same by using the same cork borer and will try to keep the weight similar. I will be keeping the same amount of solution placed in the test tubes for each different experiment, which I will measure using a measuring cylinder. I will also be keeping the same potato through out the whole experiment to as using a different one might give me irregular result as some might have more water in it then others affecting the weight and change in mass. These variables all help me to plan and explain the experiment to measure the mass increase or decrease. Introduction What is Osmosis? Osmosis is movement of water through a selectively permeable membrane, from where there is a higher water concentration (or water potential) to where the water concentration is lower. If you put a piece of ...

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