Thursday, September 5, 2013

Diffusion and Osmosis Lab Day 1

     Today we began by discussing the difference between Osmosis and Diffusion. Osmosis is the movement of water through a semi-permeable membrane of a cell to a higher concentration solution to try to equalize them. Diffusion is when particles move from higher concentration to lower concentration.
     After this discussion we did an osmosis lab that had three different parts. In the first part we created our own "cells" by putting different color and molarity fructose water into bags that act as cell membranes, and placing these in distilled water. Afterwards we found the percent change and discovered which molarities went with the different colors based on how much mass each of them gained.



     In the second part of this lab we put Poweraid into baggies and put the baggies into different molarity fructose waters. We calculated the mass change of these to see which substance had a higher concentration.
     In the third part we put sweet potatoes into different fructose waters and calculated mass change to see which substance had a higher concentration.








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