Osmosis in Potato Chips

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Osmosis in Potato Chips

Preliminary Experiment to investigate Osmosis

1M Sugar

50:50

0M (water)

Initial mass

2.40

2.05

2.34

Final mass

2.01

1.85

2.43

Change in mass

-0.39

-0.21

0.09

% change in mass

-12.5%

-10.5%

3.84%

Evaluation

From doing our preliminary experiment it enables us to gain a better

result for our real experiment. From this experiment we have learnt a

few things through trial and error, for example. If we had used a

wider variety of concentrations, our results would have been more

accurate. By using a syringe to measure the solution we would have

also got a more accurate result. We could have also weighed the potato

chips more accurately so they were roughly the same size with no skin.

Also we could have done the experiment a couple of times to get better

results.

The chip that was soaked in water gained weight, becoming turgid. The

chip in sucrose lost weight and the chip in equal sucrose: water also

lost weight.

Method

In this experiment I will use 5 potato chips, I 'm using potato chips

because they have lots of cells in which will give us better results

to explain osmosis. And will use five to give us more accurate and

better results. I will make sure the potato chips are measured

accurately, each weighing roughly the same size and making sure no

excess skin is left on. Before placing the chips in the solutions I

will measure them and record their results. I will then place the 5

potato chips in 5 separate test tubes filled with different

concentrations. For this experiment we are going to use

concentrations, 0, 0.25, 0.50, 0.75 and 1.00 all measured in moles. To

make sure these concentrations are accurate I will use a syringe to

measure out the concentrations. I will use this table to help me.

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