Tuesday 26 February 2013

Science: How to make a bouncy egg!

I posted this on An Ordinary Life's Facebook Page the other day.  It's an experiment my little Honi wanted to do.  Since sharing it others have given me the idea of once the egg is bouncy to use food colouring to colour it green.  I thought it a great idea and it very much reminded me of Green eggs and Ham, which we read that night.

In science terms: It is the acetic acid in the vinegar that breaks apart the calcium carbonate crystals that makes up the eggs hard shell. The reaction turns the crystals into CO2 that escapes as a gas (this is why we see bubbles as soon as the egg is put into the vinegar) and calcium ions.

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