Core Practical 1.16 - Osmosis in Potatoes

Question 1

Osmosis:

Method:

Answer 1

• Weigh equal-sized pieces of potatoes
• Place each piece in different sucrose solutions with varying concentrations.
• Leave the potato pieces in the solution for a fixed period (e.g., 24 hours).
• Remove, blot dry, and weigh each piece again.
• Calculate the percentage change in mass for each piece.

Question 2

Osmosis

Equipment

Answer 2

• Potatoes
• Knife
• Balance
• Sucrose solutions
• Timer

Question 3

Osmosis

Variables

Answer 3

• Dependent: Change in mass of potato slices.
• Independent: Concentration of sucrose solutions.
• Control: Size of potato pieces