Osmosis

• 1.

  Use cork borer to cut 5 potato cylinders
• 2.

  Use a sharp knife to trim the potatoes to equal length about 3cm
• 3.

  Accurately measured the mass and length of the cylinders
• 4.

  Measure 10 cm³ of the 1.0 M sugar solution and transfer the first boiling tube and label
• 5.

  Repeat step 4 for different concentrations and distilled water
• 6.

  Add one potato cylinder to each boiling tube
• 7.

  Prepare a table as see below
• 8.

  Leave the cylinders in boiling tubes over night in a tube rack
• 9.

  Remove the cylinders and gently blot them with paper towels
• 10.

  Measure the mass and length of each of the cylinders and record them on the table
• 11.

  Calculate the percentage change for each cylinder
• 12.

  Plot a graph for change in mass in g again the concentration of the sugar solution
• 13.

  Plot a graph of the change in length in mm against the concentration of the sugar solution