Wednesday, November 30, 2011

Osmosis Lab

When we performed the osmosis lab, we tried testing four different types of substances. We tried methyl cellulose, cereal, tums, and corn starch. We took the tubes and added just a little bit of water to each of them. The reason we performed this experiment was to try and see how much water weight would be transferred into the substances. What we did was weighed the substances before, and weighed them after we waited for 24 hours. Not all of the substances ended up weighing the same, they were all different. The methyl cellulose started out at 4.71oz. and ended at 9.55 oz. The cereal started at 9.69, and ended at 13.08. Corn starch actually started out as the least weight, and ended up as the least weight as well. It also was the only substance that didnt really change. The tube weighed 6.57 ounces, and after 24 hours it weighed 6.98 ounces. The tube of tums had the biggest change, and weighed the most. The experiment did take a while for full results, but they were accurate.
Preview of your graph

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