Potatoe Lab

Name:_______________________ Date:___________ Period:______ Page:_______

Potato Diffusion Lab

Hypothesis:________________________________________________________________________

__________________________________________________________________________________

Materials
Aprons/Goggles
Potato Slice (2-3cm thick)
Potato Borer
Triple beam balance
6 x 100mL beakers plastic wrap
Paper towel
50mL Distilled Water
50mL 0.2M Sucrose solution
50mL 0.4M Sucrose solution
50mL 0.6M Sucrose solution
50mL 0.8M Sucrose solution
50mL 1.0M Sucrose solution

Procedure
1. Label each beaker with the assigned solution.
2. Pour 50mL of the assigned solution into each beaker.
3. Use a Potato Borer and cut out 6 potato cylinders. (Do not include any skin on the cylinders.)
4. Determine the initial mass of each potato cylinder and record the mass in the data chart. (Be sure not to mix up your potatoes)
5. Add the potato core to the corresponding beaker.
6. cover the beaker with plastic wrap to prevent evaporation.
7. Let it stand overnight.
8. Remove the cores from the beakers and blot gently on a paper towel.
9. Determine their final mass.
10. Record the final mass in the data table.
11. Calculate the change in mass and percent change.

Data table 1: Potato Core – Group Data

Sucrose Solution

Initial Mass

Final Mass

Mass Difference
Percent (%) change in mass
Class Average Percent change in mass
0.0M Distilled Water

0.2M Sucrose

0.4M Sucrose

0.6M Sucrose

0.8M Sucrose

1.0M Sucrose

Data table 2: Potato Core Results – Class Data

Sucrose Solution
Percentage change in Mass of Potato Cores

Grp 1 Grp 2 Grp 3 Grp 4 Grp 5 Grp 6 Grp 7

Total

Class Average
0.0M Distilled Water

0.2M Sucrose

0.4M Sucrose

0.6M Sucrose

0.8M Sucrose