Investigating osmosis

Question 1

1

Answer 1

Prepare a sucrose solution of different concentrations ranging from pure water to a very concentrated sucrose solution

Question 2

2

Answer 2

Use cork borer to cut a potato into the same sized pieces. (1cm)

Question 3

3

Answer 3

Divide the cylinders into groups of 3 and use a mass balance to measure the mass of each group

Question 4

4

Answer 4

Place on group in each solution

Question 5

5

Answer 5

Leave the cylinders in the solution for at least 40 minutes

Question 6

6

Answer 6

Remove the cylinders and pat dry gently with a paper towel. This removes excess water from the surface of the cylinders, so you get a more accurate meat of their final mass.

Question 7

7

Answer 7

Weight each group again and record your results.

Question 8

Independent variable

Answer 8

Sucrose solution concentration

Question 9

Controlled variable

Answer 9

Volume of solution
The size of the potato cylinders
The type of potato
The amount of drying