Find out what affect the change of concentration in the sucrose solution :: GCSE Biology A2 A-Level Coursework

Find out what affect the change of concentration in the saccharose result has on the spate of a murphy chip.IntroductionIn this experiment I testament be taking five similar potato chips andputting them into different sucrose solutions (each one with adifferent concentration) and observing the effect that eachconcentration has on the size of the potato chip.AimI am doing this investigation in an endeavour to find out what affectthe change of concentration in the sucrose solution has on the mass ofa potato chip.Background cultivation Osmosis is the movement of peeing molecules across a partiallypermeable membrane from an area with high concentration to an areawith low concentration The opposite of osmosis is mobile uptake, this is when water supply movesfrom an area with a low concentration to an area with lowconcentration. An example of this would be a root hair cell gettingwater from its surroundings. Partially permeable membranes have holes in them. These holes arethe siz e of just one water molecule. Water can pass through the membrane in both directions although ifthere is a higher concentration of water in the solution rather thanthe potato chip, the potato chip will receive water molecules and willincrease in size. Some membranes in plant and animal cells allow only certainparticles to pass through them. They are partially (or selectively)permeable. predictionI predict that as the concentration of the sucrose solution decreasesthe mass of the potato chip will increase. I think this because alower sucrose content would mean a higher water content and thereforas osmosis takes place the water in the solution will move from thesolution to the potato chip and as a result increasing the mass of thepotato chip.I also predict that the concentration of the solution and the mass ofthe potato chip will be directly proportional to each other.VariablesIn this investigation I will change the concentration of the solutionand I will be keeping the size of the po tato and the temperature ofthe solution the same.EquipmentBelow is the apparatus that I will be using for my investigation. Stop watch Cutting tile Small knife Measuring cylinder Distilled water sucrose Potatoes Weighing scale Potato cutter Cling film RulerMethod first I will cut five pieces of potato. Then I will peal the potatoes with the knife. After this I will measure and weigh them to ensure that they are equal. Subsequently I will put 40ml of my solution in each of the testubes.Test tube one will have 10ml of distilled water and 30ml of sucrose.