Another fun experiment that we did this week while studying about the skeletal system was the Naked Egg Experiment. SO FUN! We let an egg (regular, not hard boiled!) soak in vinegar for one day. Zoey removed the egg from the vinegar and rinsed it under water and the shell just rinsed away...
leaving a gelatinous, rubbery egg with no shell!
Super cool experiment! We are going to now put it in a cup of water and it's supposed to expand, showing osmosis...this experiment was showing how the acid from the vinegar removed the calcium carbonate from the hard egg shell. It was to show what acid can do to the enamel on teeth.
2 CH3COOH + CaCO3 = Ca(CH3COOH)2 + H2O + CO2
Acetic acid + Calcium carbonate = Calcium acetate + Water + Carbon dioxide
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