Investigating The Effects Of Concentration On Osmosis

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Investigating The Effects Of Concentration On Osmosis

Preliminary Experiment: The Effects Of Osmosis On Potato Chips

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Method :

We cut three potato chips to an equal length and then we set up 3

beakers, one containing a sugar solution, one containing water and one

containing a salt solution. We put one chip in each beaker and left

overnight.

Results :

Solution

Start (cm)

End (cm)

Difference

% Difference

Sugar

4.8

4.4

-0.4

-8%

Water

5

5.6

+0.6

+12%

Salt

5

4

-1

-20%

Conclusion:

The water moved into the chip cells so the size increased, the salt

solution was a lower concentration so the water moved out of the chip,

this also happened to the sugar solution.

Experiment To Determine The Concentration Of The Cell Sap Of Potato

Introduction:

I am trying to find out the exact concentration of water in the cell

sap of a potato cell. My preliminary experiment will help with this as

I already know that distilled water moves in to the cell while a sugar

solution causes water to move out of the cell.

Prediction:

I think that a sugar solution of 0, the potato cell will increase,

between 0-1, the potato will stay the same and a concentration of 1 or

above, the potato cell will decrease in size. I think this because in

osmosis, water moves from a high concentration to a low concentration

of water.

Apparatus:

6 test tubes to put the solutions in

Distilled water to put a potato chip in

A solution of 0.2Molar to put a potato chip in

A solution of 0.4Molar to put a potato chip in

A solution of 0.6Molar to put a potato chip in

A solution of 0.8Molar to put a potato chip in

A solution of 1Molar to put a potato chip in

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