Egg in Vinegar Science Experiment


Egg in vinegar science experimentEgg in Vinegar Science Experiment

The egg in vinegar experiment is a cool and fun way to teach little kids about eggs and how they can change when they come into contact with certain things. When you put an egg in vinegar, the vinegar reacts with the hard shell of the egg, which is made of something called calcium carbonate. This reaction causes the shell to disappear, leaving behind a thin membrane that is strong enough to keep the egg from falling apart. The membrane is made of proteins, which are like building blocks that help keep things together.




  • 4 eggs (or one for each color you want to use)
  • White vinegar
  • Glass jars 
  • Food coloring


First gather all of your supplies.

Egg in vinegar Experiment

Pour enough white vinegar into the jar to completely cover the egg.

Egg in vinegar Experiment

Place a few drops of food coloring into each jar.

Egg in vinegar Experiment

Place one egg into each jar.

Egg in vinegar Experiment

Let the egg sit in the vinegar for 24-48 hours. During this time, the vinegar will dissolve the eggshell, leaving the membrane intact.

Egg in vinegar Experiment

The children can start to see the vinegar working on the eggshells as it starts forming bubbles all around the egg.Egg in vinegar Experiment Egg in vinegar Experiment Egg in vinegar Experiment

After 24-48 hours, carefully remove the egg from the vinegar and rinse it gently with water.

Egg in vinegar Experiment

Although the egg felt rubbery, it was still fragile and couldn’t be squeeze too hard.  Egg in vinegar Experiment

In fact, my daughter was particularly interested in this experiment because she wanted to feel the sliminess of the egg after it had been soaked in vinegar. As the egg dissolves, it undergoes a chemical reaction that changes its texture, leaving behind a translucent egg that can bounce and jiggle.

Egg in vinegar Experiment

It was a great sensory activity for her.


Egg in vinegar Experiment

How it Works:

The bubbles that you see in vinegar are carbon dioxide. The egg itself is calcium carbonate and, finally, the vinegar is an acetic acid.

Together, these chemicals create a special reaction which causes the shell of the egg to disappear!

The reaction is slow to happen, which is why you must leave the egg completely untouched in the cup for a full two days! Two days is the minimum amount of time. If you want the best results, we recommend leaving it for seven.


If you enjoyed the egg in vinegar experiment, then you’ll love trying out the leak-proof bag experiment as well!