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am going to investigate t he effects of osmosis on a potato chip and to find out the concentration of sugar solution with in a potato cell.

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Introduction

Aim I am going to investigate t he effects of osmosis on a potato chip and to find out the concentration of sugar solution with in a potato cell. Plan We are going to cut piece of potato and measure different concentration of sugar Solution and see if the potato gets bigger or smaller Apparatus. * Tweazer * Tile * Measuring cylinder * Boiling tube * Pipettes * Stop clock * 1 molar sugar solution * Measuring cylinder * Water bath * Knife * Potato Fair test We need to make sure all that we keep the following potato constant. * Temperature: It is vital to keep the temperature constant because if there's a height temperature the particles will collide more often, a more osmosis and also water particles mover faster then water moves in and out faster. However if there is low temperature particles will collide less often and less osmosis. * Time: The time needs to be kept constant because if the time is longer there will be more osmosis, if there's less time less osmosis. ...read more.

Middle

When the 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. What happens to a plant cell when water leaves? When water leaves the potato the cell it starts to shrink and there is no longer firm. When more water leaves the cell becomes plosmolysis. Before I do my preliminary investigation I 've got somebody results on the Internet the website is sps.k12.ar.us/massengale/osmosis_lab_example_2.htm.Here his/hers results. Contents in Bag Initial Mass Final Mass Mass Difference Percent Change in Mass Distilled water 28 g 28g 0g 0% 0.2M sucrose 26.9g 28.5g 1.6g 5.95% 0.4M sucrose 27.0g 29.4g 2.4g 8.89% 0.6M sucrose 28.4g 32.6g 4.2g 14.79% 0.8M sucrose 28.2g 32.0g 3.8g 13.48% 1.0M sucrose 29.9g 34.8g 4.9g 16.39% And for my final result I predict that my result will nearly the same as the on the Internet. Contents in Beaker Initial Mass Final Mass Mass Difference Percent Change in Mass Class Average % Change Distilled water 3.4g 4.1g .7g 20.59% 15.93% 0.2M sucrose 3.4g 3.5g .1g 2.94% -2.77% 0.4M sucrose 6.2g 5.3g 0.9g ...read more.

Conclusion

Preliminary results Potato Mass at start (g) Time in solution (min) Mass at end (g) 1 1 0 1.00 2 1 10 1.00 3 1 20 0.98 4 1 30 0.96 5 1 60 6.93 6 1 120 6.88 Conclusion Our result show we need to carry out experiment for 40 min because are lessons is for 1 hour and we need to get all the experiment for 20 min an we have to go to our next lesson. Procedure For this experiment I need to get all the apparatus and make up the sugar solution Sugar solution (Molar) (Percentage) Amount of sugar solution cm3 Volume of water (cm3) Total volume (cm3) 1 100% 40 0 40 0.8 80% 32 8 40 0.6 60% 24 16 40 0.4 40% 16 24 40 0.2 20% 8 32 40 0 0% 0 40 40 In this experiment I'm going to measure in 2 grams because it's a bigger observe in results and the weight of the potato will change. Procedure For this experiment * Firstly I will put the borat in to the potato with out causing a wound * Then I'll cut 18 pieces using a knife ...read more.

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