# The Effect of the Concentration of a Solutionon on the Rate of Osmosis in Potato Chips

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The Effect of the Concentration of a Solutionon on the Rate of Osmosis in Potato Chips

The Variables

The variables in this experiment are; -

· Concentration

· Temperature

· Amount of solution

· Amount of Potato

· Type of Potato

The variable I am going to investigate is concentration

Background Knowledge

The topics that I have studied on osmosis are: -

· Osmosis

· Osmosis in plants

· Turgidity

· Plasmolysis

Fair Test

To make this experiment a fair test I must: -

· Have the same amount of solution throughout the experiment

· Keep the temperature of the solution the same

· Amount of Potato the same

· Type of potato the same

I must keep all these factors the same throughout my experiment to

make it a fair test. I will make my measurements as accurate as

possible and will repeat each solution 3 times.

Preliminary Experiment

To decide the measurements and the strength of concentration in my

experiment I had to do a preliminary experiment. In my preliminary

experiment I set up 6 test tubes each containing a different

concentration of sugar solution. I set this up so in my final

experiment I could se that all these concentrations made an effect and

would give me a clear difference in results. I also decided on an

amount of solution for my experiment. I decided on 30ml. This covered

the chip well and didn't waste the solution. I then added my weighed

and measured chips using the venier callipers and electronic weighing

scales. This gave me an accurate reading in my measurements making my

result more accurate. Once they were added I started the stopwatch and

timed 30minutes. After 30 minutes I re- weighed and measured the

potato chips.

Apparatus

These are the items I will need for my experiment: -

· Potato

· Goggles

· Potato Borer

· Lab Coat