Tuesday, October 29, 2013

Osmosis Lab

      We recently finished a lab about osmosis in science class.  Osmosis is the diffusion of water. The purpose of this lab was to see the exchange of water in and out of a gummy bear and to see how vascular plants obtain water. We gathered three cups, water, salt, and three gummy bears. In the first cup, there was no water or salt, just a plain gummy bear. The second cup was filled half-way with water and had one gummy bear. The third cup consisted of four tablespoons of salt, and half a cup of water and one gummy bear.

     My group chose to use red gummy bears. We placed the gummy bears in their cups over the weekend, and when we came back on Monday, there were some major changes. The first gummy bear stayed the same size, the second gummy bear grew a lot in size and volume, and the third gummy bear grew a little bit, but because of all the salt the gummy bear was unable to absorb a lot of water.  It was very interesting, to see the large gummy bears. The only downside of this lab was that the gummy bears were so fragile, that when we tried to scoop them out of the cup, they broke apart, and dissolved in the water.
   
                                         
                                                          


-Emma V.

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