I demonstrated osmosis in my biology classes this week using eggs. Raw eggs were soaked in vinegar for 24 hours. The acetic acid (C2H4O2) dissolved the egg shell which is made up of calcium carbonate (CaCO3). This left a “naked” and this represents the cells in our body. 


Water from the vinegar moved into the egg, causing the egg to increase in size. 

Next, we placed the “naked” egg in corn syrup for 24 hours. Water diffused out of the egg, into the cup.

The water movement in and out of the egg is an example of osmosis. The comparison of the first and second egg with what an egg actually looks like is below.