Osmosis Required Practical

• What is the purpose of the cork borer in the experiment?

  To remove the potato from the solution.
• What must be kept the same regarding the potato species?

  Use the same species of potato
• What is the first step in setting up the experiment?

  Measure the initial mass of the potato
• How long should the potato cylinders be placed in sugar solutions?

  For 30 minutes
• What should be done after removing the potato cylinders from the solutions?

  Dab them on tissue paper
• Why is it important to remove excess water from the potato cylinders?

  To avoid affecting the mass results
• What data should be recorded for each potato cylinder?

  Initial and final mass
• What does a positive percentage change in mass indicate?

  The potato gained mass in the solution
• What are the control variables in the potato sugar concentration experiment?

  • Species of potato
  • Age of potato
  • Surface area of potato cylinders
  • Volume of sucrose solution
  • Temperature of the solutions
  • Time in sugar solutions