Osmosis Egg Lab

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Abstract This experiment was done primarily to observe the process of osmosis. Osmosis is diffusion involving water molecules. Osmosis takes place when the water molecules move from an area of high water concentration to an area of low water concentration through a selectively permeable membrane. Five eggs were placed in five different solutions. The solutions used included distilled water and four different concentration levels of a glucose solution. Results showed that, over time, the egg placed distilled water drastically increased while the eggs in the glucose solution decreased. These findings are significant because they suggest which concentrations are hypertonic, hypotonic, and isotonic. Intro The purpose of this experiment was to…show more content…
Each member gets one egg with the shell removed. One member will get two eggs. The same goes for the other materials. Each member gets one and one member will manage two with help from the others. The eggs should then be dried off as best as possible. Each egg is placed in a weigh boat. Use the scale to determine the mass of each egg. Record the mass of each egg. Each member is assigned a different solution including 10%, 20%, 30%, 40% glucose solution and distilled water. Each member will proceed to attain 200 mL of their assigned solution by using the appropriate beaker to approximately measure. The solution is then placed in the container. When each member is ready, simultaneously place the eggs in the containers submerging them in the solution. One in each, of course. Set a timer for 15 minutes. When 15 minutes is up, take the eggs out of the containers and determine the mass of each. After the mass has been determine and recorded, return the eggs to the solution and repeat the process every 15 minutes for 105…show more content…
The egg placed in distilled water grew in mass. Both of these are a result of osmosis. Osmosis is the process in which water moves in and out of the cell. The egg growing in mass, proves that the distilled water is hypotonic. The water has less solute than the egg so it is less dense. The water will continue to lower in concentration and the water will begin to move into the egg therefore making it increase in mass. The eggs in glucose solution lost mass because the solution is hypertonic meaning it has a higher density so the opposite occurs. The water on the inside of the egg will move out of the egg and into the glucose solution therefore causing the egg to decrease in mass. The additional egg placed in 40% glucose solution grew in mass and, for that, I have no explanation. It may have been an error in the procedure or
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