How the Length and the Mass of Six Potatoes Chips Changes When Left In 6 Test Tubes.

Results

Results table of the 1st experiment on length.

Results table of the 2nd experiment on length

Results table of the average experiment on length

Results table of the 1st experiment of mass

Analyse

The results show that stronger the solution the potato chip will shrink. The mass is based on the potato chip with the strongest solution shrank the most. I knew that the test tube with the strongest solution would make the potato shrink the most. I knew this as that the osmosis took place in the test tube. Osmosis is when water moles are pulled out because of the concentration and pulling them out means the cell is getting smaller. My prediction and my results both turned out the same. The results back up my theory of osmosis and they both correspond with each other.

Summary of analysis; the potato chips in sugar lost length and the potato chips in the water solution gains length. The stronger the solution the smaller the chip gets in length and the weaker the solution the bigger in length the chips get. The longer the potato chips are left in the solution the clearer the effects of osmosis, as seen on my graph, where the 22 hour chip, 3 smaller then the  5 hour which is smaller then he 3 hour.

Analyse of the graphs

The graphs show me that when the potato is add to a sugary solution they decrease in length and in water the chip increase in length the longer the potato is left in the solution the bigger or smaller in length depending on the type of the solution. The graph also shows me that after a certain time the potato will not decrease or increase in length depending on the strengths of the solution, also the stronger the sugar solution the quicker it will decrease in length

Conclusion

I’ve noticed that the strengths of the solution vary the mass and size of the potato chips in each. When I did the experiment again it gave me a anverage set of results which shows that if there are any odd results that I may have got in the 1st or 2nd experiment.  The graphs show me the same result as a visual and more easily to read then set of table.

Theory of osmosis

Osmosis is the concentration of sugar solution and the concentration of water. If there is a high concentration of sugar solution there will be a low concentration of water and when this happens the cells shrink with in it cell wall and when there is  a high concentration of water and a low concentration of sugar solution the cell will expand.

Example: Raisins

Raisin are dried grapes from were a high concentration of sugar solution has taken place and the water has left.

Evaluation

The results show me that the longer I leave the potato in concentrated solution of sugar more length of the potato chip decreases. We could have made the it a fairer test by using the same potato because different potatoes could of come from a different bag or there could have had a different concentration of sugar or water in the potato all ready and there could have been different ages making the age of the potato affect the diffusion of either the water or the sugar. We couldn’t make all the potatoes equally the same size so that is also a fault in the experiment. We could have corrected these faults by using the same potato and using special measuring appliance to make the potato chips the same size. Some of the potato chips had the peel on them so that also could have affected the results.

I had one strange result and that was on the second set of results and it was in the in the 0.06 solution of sugar and I don’t know why maybe a rise in temperature or something like that made the chip to suddenly enlarge rapidly. Of I did the experiment again I would have had more strengths of solutions e.g. a strength of 0.1 or instead of doing the length I could have measured the weight of the chip over different periods of time in different strengths of solutions. I think that reliability of my results are good because I made an average but it could have been better if I done the experiment twice more, to give me more reliable results.

I noticed at 2.0 the solution inside the potato chip and the solution out side the chip was equally the same which means that there was the same amount of water and sugar both in and out side the potato so there was no change in length. My anomalies in my results was in the 0.5 molar and it was –20 and is no were near my line of best fit and I have not a clue why this might be.