Investigation Of Osmosis In Potatoes

570 Words2 Pages

Investigation Of Osmosis In Potatoes

Aim:

To investigate the affect of different concentrations of sugar

solution on potato cells.

Variables:

The variables are; the concentration of sugar in the solution and the

mass of the potato cylinder. We will measure the mass of a potato

cylinder after a certain amount of time in a certain solution.

Fair test:

To keep the test fair we need to keep the controls the same. Like

keeping the temperature the same so the kinetic energy doesn't cause a

faster reaction.

Prediction:

I think that if the solution is more concentrated with sugar then the

mass should go down. I think this because the concentration is made

even inside and outside of the potato so water has to be removed to

equal the concentration levels. I think the opposite will happen in

weaker solutions, as water has to be placed in so the potato will

swell up and weigh more.

Apparatus:

This is the equipment we will use:

· Potato cylinders

· Cork boner (to make the cylinders)

· Beaker

· Ranger of sugar solutions (0M-1M)

· Balance

· 5 petri dishes

Diagram:

Method:

We will make four 2cm-potato cylinders using the cork boner for each

petri dish. We will measure each cylinder for its mass before the

experiment. We will then place the cylinders into the petri dishes for

around 5o minutes in each solution and then after the 50 minutes we

then re-weigh the cylinders to find either a decrease or an increase

in mass, note this down repeat it and make a conclusion on the

results.

Safety:

To keep the experiment safe we need to take extreme care when using

the scalpel. We also need to take care with the cork boner.

Results:

[IMAGE]

1st Results of my experiment

We found that the higher the concentration of sugar in the solution

the more mass the potato lost.

Open Document