Wednesday, May 18, 2011

Which came first, the chicken or the egg?


What can you do with vinegar and eggs besides dye them for Easter?  How about some science fun? 


 Place one raw egg in a jar with a tight fitting lid, pour vinegar until it covers the egg, place the lid tightly on the jar, and wait.


You will really notice some changes within 24 hours as the shell seems to melt away.


The eggshell will completely melt away, but the membrane of the egg remains intact.  When held up to light, you can see the yolk inside the egg.  Warning:  if dropped, it will go splat!  (Ask me how I know.)

{The scientific explanation for this is that the vinegar, an acid, will break up the eggshell, calcium carbonate, and the calcium particles will float away.  The bubbles you will see are carbon dioxide, resulting from the carbonate.}

To learn more about eggs, check out these books: