Osmosis

• 1. Peel the potato. This is because the potato skin can affect osmosis
• 2. Use a cork borer to produce cylinders of potato. Using the cork borer makes all of the cylinders the same diameter. Then use a scalpel to trim the cylinders to have the same length (around 3cm)
• 3. Measure the length of each cylinder by using a ruler and the mass by using a balance then place each cylinder into a test tube
• 4. Add 10cm3 of 0.5 molar sugar solution to the first test tube. Add 10cm3 of 0.25 molar sugar solution to the second tube and 10cm3 of distilled water to the third tube
• 5. Leave the potato cylinders overnight to allow osmosis to take place
• 6. Remove the potato cylinders and gently roll them on paper towel to remove any surface moisture
• 7. Measure the length and the mass of the cylinders again