Potato Chips

... ng sure that I do not squeeze the chip so that my results are fair. I have decided that I am no longer going to use 50ml of solution for each chip, because this is proved to be too large, therefore I will only need to use 25ml. I also must make sure that the solutions must be removed from all the test tubes after 10 minutes to have a fairer test. I am going to have three experiments going on at one times, and then I will wash the test tubes and re-use them. I must wash them so that no salt solution is left in them that might change my results. When weighing the weight of the potato chip on the scales, you must not lean on the bench because it affects the weight. I noticed that I had enough time left in the double lesson to do my whole experiment again, which means that I would have 6 sets of results. The more results you have the more accurate you graph will be, so when I come to do my actual experiment I will repeat it. I must also make some labels to label my test tubes with so that the test tubes do not get mixed up. I can also see that there will be some anomalous results, so if I do take a wider set of results, (by repeating the experiment), I will get a more reliable average. Also changing the other aspects e.g. such as emptying out all the solutions after 10 mins, will hopefully produce less anomalous results.

Results

Distilled water mass before (g) mass after (g) change in mass (g) %change in mass 1 1.46 1.52 0.06 4.109589041 2 1.64 1.75 0.11 6.707317073 3 1.72 1.85 0.13 7.558139535 4 1.64 1.89 0.25 15.24390244 5 1.63 1.85 0.22 13.49693252 6 1.75 1.95 0.2 11.42857143 average 1.64 1.801666667 0.161666667 9.757408672 0.25m mass before (g) mass after (g) change in mass (g) %change in mass 1 1.56 1.46 -0.1 -6.41025641 2 1.66 1.64 -0.02 -1.204819277 3 1.6 1.61 0.01 0.625 4 1.51 1.15 -0.36 -23.8410596 5 1.63 1.68 0.05 3.067484663 6 1.34 1.39 0.05 3.731343284 average 1.55 1.488333333 -0.061666667 -4.005384557 0.5 mass before (g) mass after (g) change in mass (g) %change in mass 1 1.65 1.45 -0.2 -12.12121212 2 1.66 1.52 -0.14 -8.43373494 3 1.88 1.71 -0.17 -9.042553191 4 1.42 1.36 -0.06 -4.225352113 5 1.66 1.51 -0.15 -9.036144578 6 1.6 1.52 -0.08 -5 average 1.645 1.511666667 -0.133333333 -7.976499491 0.75 mass before (g) mass after (g) change in mass (g) %change in mass 1 1.64 1.36 ...