Osmosis Practical

Question 1

Process:

Answer 1

1. Cut up a potato (or any other object) into Identical cylinders and measure their initial mass
2. Fill up some beakers with different sugar solutions; one being pure water and others being of different concentrations of sugar solution.
3. Place one potato cylinder into each beaker of solution and wait for 24 hours.
4. Then, Take the cylinders out, pat them dry with a paper towel, and weigh their masses again

If the Potato cylinder has taken in water the mass will increase
If the Potato cylinder has released water the mass will decreased

Question 2

Process:

Answer 2

1. Cut up a potato (or any other object) into Identical cylinders and measure their initial mass
2. Fill up some beakers with different sugar solutions; one being pure water and another being of different concentrations of sugar solution.
3. Place one potato cylinder into each beaker of solution and wait for 24 hours.
4. Then, Take the cylinders out, pat them dry with a paper towel, and weigh their masses again
5. If the cylinders were taken in water then the mass would increase (low concentration in potato)
   If the cylinders release water, then the mass would decrease (high concentration in potato)
6. Then you can calculate the percentage change in the mass.

Question 3

Independant Variable:

Answer 3

The concentrations of the sugar soloution

Question 4

Dependant Variable:

Answer 4

The change in mass of the Potato (etc.)

Question 5

Control Variable

Answer 5

Volumes of solution
Length of cylinders
Temperature
Time