osmosis practical

• Describe the osmosis practical.

  Cut up potato into two identical cylinders

  Measure mass of cylinders

  place one in a concentrated sugar solution, and the other in pure water

  leave for 24 hours

  take out each one and dry with paper towel

  weigh each cylinder

  calculate percentage change
• Name the independent variable in this experiment.

  concentration of sugar solution
• Name the dependent variable in this experiment.

  mass of potato cylinder
• What could affect this practical?

  excess water not being dried off

  evaporation changing sugar concentration