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Naked Egg–Pinned it, Did it!

When I saw the naked egg experiment on Pinterest I just knew I had to try it with my girls.  This one even fascinated me and my husband!

Naked Egg Experiment

To do it with your kids you’ll need:

  • One to two raw eggs
  • A see through glass or container
  • Vinegar
  • Corn syrup
  • Water
  • Spoon
  • Time

Time is the biggest issue with this experiment.  Each phase takes 24-48 hours to complete.  My girls got a bit anxious at first and actually broke two eggs!

Naked Egg Experiment,  Egg in vinegar

1) Start by gently placing a raw egg into a clear glass or container.
2) Next add vinegar to the glass until the egg is covered. Pretty much right away you’ll notice bubbles forming on the egg. This is the beginning of the vinegar (an acid) eating away the egg’s calcium shell.
3) Leave the egg alone for 24 hours.
4) After 24 hours, gently pour out the vinegar.

naked egg experiment, egg in vinegar

5) Grab your egg and gently rinse it under water. You’ll notice that the shell is beginning to rub or peal off. DO NOT FORCE IT! My girls learned the hard way not to pick too much. They broke the first egg.
6) After you’ve rinsed your egg, gently put it back in the glass and cover with vinegar again for 24 hours.
7) After 24 hours, rinse off you egg with water again and rub off any remaining shell.

This is where the fun begins!

You could stop at this point and simply play with or bounce your egg until it breaks, or you could move on to the next steps:

naked egg experiment
Put your “naked egg” in corn syrup for 24 hours and watch it shrivel up.

Then…put it in plain water for 24 hours and watch it plump back up again!
naked egg experiment

It’s all about osmosis.  I tried explaining that to my girls but they are only 4 and 7 so they didn’t quite get it.  Oh well, it was a blast to do anyway.

One other FYI: We bounced the egg as high as we could until it broke.  I think we made it up to about 2-2.5 feet before it broke!

Have you done this with your kids?

Comments

  1. I seem to remember seeing that same thing as a kid, probably in a science class, but more likely it was an episode of Mr. Wizard. Wow, did I just date myself there? It is a great way for kids to start learning about chemical reactions and stuff.

  2. How cool is THAT. We are SO trying that this weekend!

  3. That is pretty cool. We don’t have mini humans at my house, but Mom would do this just for herself or for the niece and nephew! Super cool idea!

  4. O.k. this is cool Jamie. I may try this with my son on his “I’m bored” days.

  5. Morgan Molitor says

    Oh my gosh, that is crazy! I have never seen or heard of this! Haha! I will have to give it a try with my nieces! So neat. -Morgan

  6. That is so cool! That would be a great lesson for homeschool science! I have never even heard of this before, nice find!