Gross! Naked Egg Science Experiment with Vinegar

This egg experiment is awesome. It magically transforms an ordinary egg to a large naked egg through this egg science project that kids will love. Kids Activities Blog is always excited when household items hold magical science powers!

We made a Naked Egg!

For Science, we are learning about the “building blocks of life” – aka Cells – this year with the kids. This is the best science experiment for kids EVER! We used this “naked egg” project along with the song about cells (featured at the end) to learn the parts of our cells.

The kids were able to identify cell parts by physically seeing, smelling, touching, and even tasting – ewwww!

Naked Egg Experiment - child's fingers shown holding the yolk of an egg over the table
Super fun science project…make a naked egg with some vinegar!

We had so much fun with this kids science experiment, it is part of our science book: 101 Coolest Simple Science Experiments for Kids!

There are a lot of different vinegar science experiments for kids and vinegar science projects, but this is definitely one of our favorites because it is super easy with surprising results.

We put the egg in vinegar!

Vinegar Egg Experiment – Science for Kids

As the shell of the egg is made of calcium (a base, one of the primary ingredients in antacids), it breaks down with fizzles and bubbles when it is in contact with an acid.

Vinegar is an acid.

Naked Egg Experiment in Jar - 4 eggs shown in a clear glass jar filled with vinegar sitting on a table
Put the eggs in a glass container and cover with vinegar.

How to Make a Naked Egg – Science for Kids

We took our egg and dropped it lightly into a jar of white vinegar. After about 15 min it starts to bubble – just like when vinegar is dripped on baking soda – after about 8 hours the egg starts to spin as the gasses are released from the egg shell.

It is so pretty to see the dancing egg.

Due to osmosis, the cell – aka egg – absorbs the liquid and will start to swell. Parts of the egg shell will crack and dissolve.

After three days, you will have a completely naked egg!

Naked Egg Experiment in Bowl - 4 eggs shown that look like yolks, but really naked eggs
If you are patient, you will have naked eggs!

Egg Shell Dissolves – Science for Kids

Once your egg has lost its shell, be very careful with it. The membrane is very soft and permeable. We actually broke on of the eggs in our experiment during out photo shoot.

The naked egg is so squishy and slimy feeling – your kids will love it! As they hold it, identify the parts of your egg.   There is the membrane – it holds the egg together.

We compared the membranes of a fresh egg, a burst naked egg and an egg that was sitting in sugar water. The differences and similarities are astounding.  

We found the nucleus – the command center or the brain of the cell- it is where RNA is replicated. The cytoplasm was easy to find, it is the “white” of the egg. In a chicken egg, the vacuole and Golgi bodies are inside the yolk.

Look at how much bigger the egg is after it absorbed all the fluid.

Naked Egg Experiment for kids - child's hands with two eggs comparing what they look like
Identify the parts of your egg experiment!

Deflating Egg Science Project for Kids 

For another fascinating experiment (if only we had more eggs, we burst a couple and didn’t have enough leftover), put the swollen naked egg into corn syrup and watch it deflate.

The opposite of osmosis will occur and the liquid will leave the cell, leaving a brownish shriveled egg. So interesting to literally watch what eating too much sugar does to us!

Grab Our Science Book for Kids

Naked Egg Experiment - 101 Coolest Science Experiments book

The 101 Coolest Simple Science Experiments for Kids is full of easy science play and fun for everyone!  You can pick it up at your local bookstore or online.

Have you done a science experiment with your kids?

I’d love to read about it! This science experiment was inspired by this egg experiment. We featured it last year in our Silly Science Experiment collection. Thanks Emma for sharing the details with us so we could remove our own egg shell!

More Science Fun from Kids Activities Blog

This naked egg experiment is a great way to for kids to see science at work first hand. For more science experiments for kids, check out these other ideas:

Our book, The 101 Coolest Simple Science Experiments, features tons of awesome activities just like this one that will keep your kids engaged while they learn. How awesome is that?!

The 101 Coolest Simple Science Experiments

Did your kids have the patience to make a naked egg?


  1. We’ve done this experiment for years in high school biology. It gives a wonderful visual to the process of osmosis. And the eggs are definitely gross. 🙂

  2. This sounds like the best way to learn about cells I have ever heard of! Can’t wait to try it this week!

  3. is this just an ordinary egg?! COOL!!

  4. So what are you testing

  5. Kerry-Lee says:

    We did this experiment at home, both my kids aged 3 & 6 loved it and were very patient. We ended up leaving ours for a week and it got quiet rubbery! My kids also noticed a change in size. We will do this again but will measure our egg next time. I also read if you take it out of the vinegar and leave it exposed to the air it will harden again. However we burst ours so we before we got to this stage so can’t confirm this.

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  7. Thanks for sharing! I can’t wait to try this with my little one. We’ve been doing science experiments all week!

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  10. I can’t wait for my daughter to try this for her science project! So cool!!!

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  13. I’m guessing you use a cooked egg before you drop the egg with the shell on in vinegar?

  14. Cassandra says:

    I actually did this with my kids after a friend brought one she did over during hers she added red food coloring so you could actually see the veins… It also bounced when dropped from 2-3 inches off the counter although the smell is not pleasant it was fun

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