This movement must osmosis coursework help place across a partially permeable membrane such as a cell wall, osmosis coursework help lets smaller molecules such as water through but does not allow bigger molecules to pass through. The molecules will continue to diffuse until the area in which the molecules are found reaches a state of equilibrium, meaning that the molecules are randomly distributed throughout an object, with no area having a higher or lower concentration than any other.
For this particular investigation I think that the lower the concentration of the sugar solution in the test tube the larger the mass of the potato will osmosis coursework help. This is because the water molecules coursesork from a high concentration, i.
In the water itself, to a low concentration, i. In the potato chip. Therefore, the chips in higher water concentrations will have a larger mass than in hrlp sugar concentrations. The graph above shows a simple curve obtained when the concentration of the solution osmosis coursework help plotted against the percentage change in mass.
Found what you're looking for?
Using a measuring cylinder I measured out different amounts of osmosis coursework help solution and distilled water which I then poured into the test tubes in a osmosis coursework help ratio giving me the various molar concentrations. I then weighed every potato chip on an electronic balance and recorded the weights. I swiftly put 3 potato chips into each beaker and then started my stopwatch.
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. Osmosis coursework help 30 minutes I drained out the solutions in the sink and placed all the osmosis coursework help 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. I dried each chip with the paper towel and then placed each one on the scales so that I could weigh them.
How to write life goals potato was measured accurately on the electronic osmosis coursework help and then the osmosis coursework help were recorded. 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. Precautions: "h As was stated in my planning section of the coursework, I had to keep all of the different non-variables the same, to osmosis coursework help sure that none of them affected the results of the experiment in any way.
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.
What Are the Types of Osmosis?
The cutting of osmosis coursework help potatoes was the most difficult part of the osmosis coursework help as although I was recording my results by mass, it could well have affected the surface area and so the overall rate of osmosis. If I were to repeat the experiment I would have possibly found cohrsework machine to cut the potato as it would ensure that all potatoes would be the same weight and dimensions.
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. Doursework would ensure that I have an accurate amount of fluid in each test tube. I could also weigh osmosis coursework help chip on a more accurate scale, e.]