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Investigating the factor that affects the route of osmosis in a potato chip.

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Introduction

Investigating the factor that affects the route of osmosis in a potato chip The factors which will affect the rate of osmosis is: * The mass of the potato cylinder used. * The concentration of the glucose solution * The time the potato is left in the solution The factor that I am going to investigate is the concentration of the solution. I predict that the higher concentration of the solution will make the potato chip heavy. Plant cells always have a strong cell wall surrounding them. When they take up water by osmosis they start to swell, but the cell wall prevents them from bursting. Plant cells become "turgid" when they are put in dilute solutions. Turgid means swollen and hard. ...read more.

Middle

I put it in the solution, for every different try e.g. 0.1m 3. I than leave it for 24 hours 4. Then I weight it and write down the results This is a diagram of what the experiment will look like The diagram above shows the glucose penetrating the chip after the potato chip has been in the beaker for 24 hours. Safety Safety is an important aspect in every experiment, even if the experiment seems to be very harmless. This is why I'll be taking this into consideration. My table of results is on the next page. Concentration of solution (m) Weight after Average 0.1 A) 8.633 B) 8.556 C) 8.654 8.614 0.2 A) 8.013 B) 8.273 C) 8.030 8.105 0.3 A) ...read more.

Conclusion

In this experiment, I believe that I have collected enough data to support my hypothesis. This investigation was, I think, successful. Successful meaning my results collaborated my predictions. The graph shows that: � Osmosis actually took place in the experiment. � As the molars increased, the percentage of the weight difference decreased. Evaluation My results were accurate, but I could have done the experiment more times to make them more accurate. Yes there was one measurement, which does not fit the pattern, is 0.2m, so I decided to try the experiment again. I did collect enough results to help me write a definite conclusion because I did have enough results to help me with the conclusion Yes if I had the chance of doing the experiment again I would make sure I had enough help, and enough results to help me with my conclusion. Richard king Science coursework July 2002 ...read more.

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