How Osmosis Affects A Potato Chip Essay -- GCSE Biology Osmosis Course

How Osmosis Affects A murphyAim - To See How Osmosis Affects A Potato explorative work vaticination -I predict that the saddle of the murphy in the sugar termination leave alone decrease and the weight of body of water go out increase. Ipredict that the weight of the spud in the sugar solution testamentdecrease when it reaches 31 (salt water).In put Variables-Molarity-Size of white potato-Mass of Water-Molarity of Sugar-Length of succession in the solution-Temperature of waterOut put variables-Weight of potato divulge variables-Molarity of sugar. This is a key variable because it has the mosteffective outcome because osmosis more(prenominal)over works when there are differentmolarities in and outside of the potato other wise the diffusiontheory of osmosis wont work.We are departure to keep a fair test by- Keeping every the volume of water the same in each test underground- Keeping the starting weight of the potato the same to begin with- When removing the special w ater of the potato make sure all excess water is removed but without squeezing any water out of the potato- Keeping the temperature of the water the same- Use the same type of potato (grown from the same potato)We will keep the prove safe by reservation sure that all the test tuberacks are in a sui tabularise position so they wont easterly be knockedover.Preliminary results--------------------------------------------- Sugar Water Time go away in 0.44g 0.44 Start 0.43g 0.44 5mins 0.42g 0.45 10mins 0.49g 0.46 15mins 0.38g 0.46 20mins--------------------------------------------- The table above shows the weight of the potato.PredictionI predict that the weight of the potato in the sugar solution will godown and the weight of the water will decrease because the watermolecules in the sugar solution are small enough to diffuse through asemi-permeable tissue layer in the pot ato is the proud concentration ofwater and water will only go through from a high concentration to alow concentration of water. Water goes into a potato sample becausethere is a higher concentration of water out side the potato thaninside of the potato and water will go from a high concentration to alow concentration therefore the water will go into the potato and... ... to be sureto show a uninterrupted pattern. We didnt have any anomalous results maybebecause we mad sure that we left each potato in the solution an equalamount of time. excessively when we removed access water we were very carefulnot to lodge any water out of the potato other wise it would of doit an unfair test. To improve reliability and accuracy next time inthe prim nary plan I would make sure that my portent was detailedso I would understand everything much go paster in distinguish to get a betterset of results. Also the preliminary experiment next time will be alot more accurate in the way that we shou ld take more care in timethat the potato is left in the solution for how ever languish of a time itshould be left in. The main plan could be longer and in more detail sothat it is more clear to read and understand. The amount of resultsthat we got was just about enough to work out and see weather theprediction was correct. This means that next time we should do moresets of results to get a more accurate outcome. To help binding up thisexperiment we could use more chats of graphs showing rate of osmosisin time and other ways of showing how osmosis affects a potato.