Student Blogs

Wednesday, October 18, 2017

Osmosis

During the last two weeks of our science unit on cells we learned about osmosis. We did this using eggs. We soaked our eggs in vinegar overnight in order to dissolve the shells. The  eggs then had only a thin membrane holding them together. They were rubbery and translucent and lots of fun to hold!  In order to see osmosis in action, we observed what happened to the shell-free eggs when they were placed in substances like molasses, light corn syrup, and dark corn syrup.  We discovered that the eggs lost water and shriveled up.  We learned that this is because water passes through the membrane from an area of higher water concentration (egg) to an area of lower water concentration (molasses and corn syrup)  in a process called osmosis.  We then placed the shriveled eggs in water with food coloring. Ask your child what happened. It was very cool! Check out the pictures below.













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