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Kids LOVE this activity of watching an egg change drastically when soaked in various liquids! The vinegar dissolves the shell, leaving the cell membranes as the gateway to lots of excitement!
This becomes a memorable way to drive home the concept of cell membrane passive transport processes! And even if you don't teach cell transport processes, this is a creative, fun experiment to start out the school year or as a fun themed experiment for kids to perform near Easter!
After a discussion about using the chicken egg as a great way to study how a cell reacts to its environment, a whole-class activity over the course of 10 days (taking about 5 minutes at the start of class every other day) has students predicting, observing, and measuring the changes of a single egg as it is soaked in various liquids. This part could also be done in groups.
Once students graph the data and answer discussion questions about how the "EggSperiment" shows the processes of diffusion and osmosis, assign them their very own EggSperiment to design and conduct at home! They choose the liquids and the soaking times for their own EggSperiment, and they observe, measure and take photos of their egg throughout the process in order to create a poster or Powerpoint presentation to display their results!
A diffusion and osmosis "critical thinking" homework worksheet is also included.