Diffusion & Osmosis:
This experiment was performed to demonstrate the process of osmosis and to show visible as well as quantitative evidence proving that osmosis occurred. Through the tasks of determining the percent concentrations in two different solutions, we were studying the process of osmosis. Osmosis is the best way to perform this experiment because as we went through the experiment, the weight of the beaker/dialysis tubing changed and the only logical explanation was that diffusion of water had occurred. Osmosis is the diffusion of water. Depending on which was heavier (the beaker or the dialysis tubing) after the experiment was performed, the direction of water diffusion was apparent. If the beaker was heavier, then that implies that the water diffused from the dialysis tubing to the beaker. In contrast to this process, if the dialysis tubing were heavier after the experiment, then the water would have diffused from the beaker to the dialysis tubing. We saw both these processes of osmosis occur in our experiments because we had two different solutions. The processes of diffusion and osmosis account for much of the passive movement of molecules at the cellular level thus we have to see the changes in the lab. In this lab, I studied some of the basic principles of molecular movement in solution and performed a series of activities to investigate these processes. The purpose of this lab was to observe the change in the bag of the temperature and weight. Diffusion is when molecules are in constant motion and tend to move from regions where they are in higher concentration to regions where they are less concentrated, in this lab we watch this happen where the solution around the wrapped bag is putting pressure that it diffuses the bagged solution’s. Diffusion is the net movement of molecules down their concentration gradient, which in this lab was important to observe. Diffusion can also occur in gases, in liquids, or through solids....
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