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# Investigate the effect on potato chips in different concentration of sugar solutions

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Introduction

Aim: - To investigate the effect on potato chips in different concentration of sugar solutions. Introduction: - Osmosis is the net movement of water molecules from a region where there is a higher concentration of water molecules to the region where there is lower concentration of water molecules. The water molecues move through a partially permeable membrane, which allows the smaller molecules to pass but not the big ones. The diffusion of molecules from the region of higher concentration to the region of lower concentration until the concentration of water molecules has become same in both the areas. Precautions to make the test fair: For a fair test certain factors had to be kept in mind. I decided to choose sugar solutions of different concentrations so that I get different sets of result containing information about the change in mass, change in length and the mass and length of potato chips after the experiment. If any of the factors were not kept constant it would mean that the test is not fair. Such as: - * All the potato chips have to be of the same length so that the area at which osmosis occurs is the same. * Doing all the tests at one temperature will control the temperature. For the purpose of my experiment I am going to do all the experiments at room temperature. ...read more.

Middle

4. Using a measuring cylinder I measured out different amounts of sucrose solution and distilled water, which I then poured into the test tubes in a percentage ratio giving me the various molar concentrations. 5. I then weighed every potato chip on an electronic balance and recorded the weights. 6. I swiftly put 3 potato chips into each beaker and then started my stopwatch. Chips were used to create an average, which gave me a better set of results and more accurate graphs. 7. Whilst waiting I set out some paper towels with which I was going to dry the paper and I drew up a basic table for my results. 8. After 3 hours I drained out the solutions in the sink and placed all the chips on the paper towel in the order I had put them in the test tubes as to not confuse myself as to which chip came from which solution. 9. I dried each chip with the paper towel and then placed each one on the scales so that I could weigh them. 10. Each potato was measured accurately on the electronic scales and then the weights were recorded. 11. As I had time after doing the first set of results I redid the experiment under exactly the same conditions. This gave me secondary set of results, which gave me a more accurate view on the changes. ...read more.

Conclusion

0.10m, 1.15m, 1.20m, and so on. This way would have allowed me to also find out the isotonic point far more accurately as the one that I estimated is very approximate. The cutting of the potatoes was the most difficult part of the experiment as although I was recording my results by mass, it could well have affected the surface area and so the overall rate of osmosis. As well as the potato I could have found a more accurate way to measure out the solutions and to determine the molar concentrations. Perhaps I could have used a burette. This would ensure that I have an accurate amount of fluid in each test tube. I could also weigh each chip on a more accurate scale, e.g. not to 0.00g but to 0.0000g.There were not any out of the ordinary results, but some were not as close to the line as others. This may have been caused by human. When the potato chips were removed from the test tubes and dried I may well have dried some potatoes more thoroughly than others and so some would have more excess water, which would add to the mass. If the experiment was repeated I could find another way to dry the potatoes that would ensure that all were dried in the same way for the same time. However with all this said I think that the experiment was truly successful and I was very pleased with the complete comparison of my results with my initial prediction. ...read more.

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# Related GCSE Life Processes & Cells essays

1. ## Investigating the effect of Sucrose Concentration on the Rate of Osmosis in Potato Chips.

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When the sucrose concentration was 1.0mol/litre, the potato chip's mass decreased on average by approximately 18.04% from 3.88g to 3.18g. This was due to the water from inside the potato cells exerting a pressure upon the outside of the cells forcing water through from a higher water concentration to that of a lower concentration.

2. ## Finding out the effect of osmosis on potato chips at different concentrations of sucrose ...

Apparatus * 10 test tubes * Tile * 4 solutions, which are 1.25%, 2.5%, 5% and 10% * Ruler * Razor blade * Calculator * Test tube rack * Measuring cylinder * Distilled water * Weighing scales * Goggles Working safely Safety is an important aspect in every experiment, even if the experiment seems to be very harmless.

1. ## To investigate osmosis in potato chips when being placed in sugar solutions of different ...

I will start from: > 1mole > 0.75 mole > 0.5 mole > 0.25mole > 0.0mole (P8A) Extended theory We already know that water will move from a high concentration to a low concentration of water, and because of

2. ## Aim: To find out the effect of altering the concentration of sugar solution on ...

I will then take the potato chip out of the test tube and remove excess water with tissue paper and then the test tubes will need to be rinsed out with distilled water and dried before being reused. After this, I will repeat the procedure with different concentrations of sugar solutions.

1. ## Potato Chips

Temperature The temperature will affect the amount of kinetic energy that the molecules have, this means it will affect the speed of the molecules and therefore the rate of osmosis. Also if it is very warm within the room the rate of evaporation will increase causing the potato chips to dry out faster.

2. ## To investigate the effect of varying concentration of different sugar solutions on the amount ...

During my preliminary experiment this prediction was confirmed which further reinforces the accuracy of my prediction. Say more about preliminary test backing up prediction Where did you get the concentrations from that you mention in your prediction? Background information This diagram gives guide to what happens to the cells when osmosis occurs between them and another medium.

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