Thursday, February 14, 2019
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 parsimony in the sucrose origin has on the mass of a spud chip.IntroductionIn this experiment I volition be winning five similar murphy chips andputting them into different sucrose solutions (each iodin with adifferent meanness) and observing the effect that each parsimoniousness has on the size of the tater chip.AimI am doing this investigation in an endeavour to find out what affectthe change of parsimoniousness in the sucrose solution has on the mass ofa potato chip. reach information Osmosis is the shamment of water molecules across a partiallypermeable membrane from an area with high concentration to an areawith low concentration The opposite of osmosis is active uptake, this is when water movesfrom an area with a low concentration to an area with lowconcentration. An example of this would be a root sensory hair cell gettingwater from its surroundings. Partially permeable membranes have holes in them. These holes arethe size of jus t one water molecule. Water rear 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 will outgrowth in size. Some membranes in plant and animal cells allow totally 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 change magnitude the mass of thepotato chip.I also predict that the concentration of the solution and the mass ofthe potato chip will be directly comparative to each other.VariablesIn this investigation I will change the concentration of the solutionand I will be keeping the size of the potato and the temperature ofthe solution the same.EquipmentBelow is the apparatus that I will be employ for my investigation. Stop watch Cutting tile Small knife standard cylinder Distilled water sucrose Potatoes Weighing scale Potato stamp Cling film RulerMethod Firstly I will cut five pieces of potato. Then I will peal the potatoes with the knife. after(prenominal) this I will measure and weigh them to ensure that they are equal. later on I will put 40ml of my solution in each of the testubes. testing tube one will have 10ml of distilled water and 30ml of sucrose.
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