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Can I Do the "Squishy Egg in Vinegar Experiment"?

This was a super cool and creepy thing I saw in a 5-Minute Crafts YouTube Video. They put an egg in vinegar for 24 or 48 hours.

Then the shell disintegrated, it got bigger and they were able to drop it and it bounced around. They also did some other things with dye and maple syrup, but I didn't do those things.

I wanted to see if it worked for myself. :) There is also some information I found on Google on the science behind the experiment below.

This post is for World Laboratory Day. Your home or kitchen can be a laboratory too! Haha! :)

World Laboratory Day

"World Laboratory Day celebrates the place where great discoveries, inventions, and medical cures are made. Its also where mad scientists dwell. Perhaps the most well known thing to come out of  laboratory was...Frankenstein!

Countless ideas, concepts and theories are tested in laboratories. Most of the world's greatest medical treatments and cures were discovered and perfected in laboratories, after endless study and testing. Products coming out of laboratories have helped and aided mankind in many, many ways. 

Celebrate World Laboratory Day by learning more about how they work. If you chance across a laboratory worker (or mad scientist) today, wish them a Happy World Laboratory Day.

Origin of "World Laboratory Day":

Our research did not find the creator, or the origin of this day."


I just put the egg in vinegar. You check it at 24 hours.

Hour 12:

I just took photos at hour 12. I didn't pick it up or move it. You can see that the shell is starting to disintegrate and there is some foamy stuff.

Hour 17:

I gave it a spin because part of the egg (top part in photo at hour 12) didn't seem to be submerged. I think it came back up to the way it looks at hour 12 anyways. Probably the yolk falls to the bottom inside the egg and it settles like this. I didn't take a pic.

Hour 24:

You can see the shell is still intact some, but it has disintegrated. It is creepy to squeeze it. See video. The video is also on YouTube. I decided to leave it in there for another 24 hours.


Hour 38:

I forgot to do it exactly at hour 36. You can see the egg is much bigger than a normal egg and still squishy! In this video, I had some of the hour 24 at the the beginning and the hour 38 video at the end.


Hour 48:

The file was too big for me to send to e-mail and upload to the website, but the link to YouTube is below. I squeezed it until it popped, haha! :)

In the original video, they bounced it around, but I didn't want to bounce it in case it went splat! And then I would have to clean it up.


The Science Behind It:

The Steve Spangler Science website has a lot of info about it and they call it "Naked Eggs".


"The acetic acid in the vinegar reacts with the calcium carbonate in the eggshell to make calcium acetate plus water and carbon dioxide that you see as bubbles on the surface of the shell.

The chemical reaction looks like this . . .

2 CH3COOH + CaCO3 = Ca(CH3COO)2 + H2O + CO2

Acetic acid + Calcium carbonate = Calcium acetate + Water + Carbon dioxide

The egg looks translucent when you shine a flashlight through it because the hard outside shell is gone. The only part that remains is the thin membrane called a semipermeable membrane.

You might have noticed that the egg got a little bigger after soaking in the vinegar. Here’s what happened…Some of the water in the vinegar solution (remember that household vinegar is 96% water) traveled through the egg’s membrane in an effort to equalize the concentration of water on both sides of the membrane. This flow of water through a semipermeable membrane is called osmosis."


There are lots more experiments you can try too -- putting it in corn syrup to see it shrivel up or bouncing it at different heights. I may try bouncing it in the sink or shower. Haha! Give it a try! Especially if your eggs are expiring. It's super fun! We are good at this!

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