How to Make a Rubber Egg Science Experiment

Have you done the rubber egg science experiment before? It is such a fun one for kids!

You only need a couple supplies to make a rubber egg and the results are so impressive.

How to Make a Rubber Egg Science Experiment for Kids

Rubber Egg Experiment Supplies:

  • cup
  • egg
  • vinegar
  • notebooks to record experiment

Ask the kids to predict what they think will happen if you leave an egg in vinegar and have them record their thoughts in the notebooks.

Egg in Vinegar Science Experiment

We put the egg in a cup and covered it with vinegar. The kids noticed there were bubbles on the shell of the egg immediately.

Rubber Egg Science for Kids

We left it in the vinegar for two nights and continued to watch it. Slowly the shell of the egg disappeared and the egg got bigger. The vinegar dissolves the shell but keep the membranes of the egg intact giving it a rubbery appearance.

Make a Rubber Egg with Vinegar!

The kids thought it was amazing and all took a turn holding it.  It is still an egg though so make sure if you do this with your kids you supervise them and have them properly wash their hands.

Make an Egg Bounce Science Experiment for Kids!

You can even gently bounce the egg on a flat surface!

What Happens to a Rubber Egg When You Drop It

Be careful though. If you bounce it too hard the membrane will break and you’ll have a big mess!

Doing experiments at home is such a great way to get your kids to start thinking like scientists!

More Kitchen Science Experiments for Kids:


    • says

      Hmmmm…I don’t totally know what would happen if you fried it! I’m guessing with all the vinegar (and having sat out for days) that it would be gross, but I don’t actually know! If you try it report back to us!

    • says

      I don’t think it would be edible at all if the egg was not refrigerated since you’re not supposed to eat food that’s been left out for more than 4 hours and this was left out for 2 days. If it can be done in a fridge then maybe? Or will it have too much vinegar in it at that point? Curious.

    • Betsy says

      You are correct that the process going on here is osmosis. The vinegar dissolves the egg shell, but then the vinegar transfers through the skin into the inside of the egg. If you put the vinegar filled egg into a cup of corn syrup, you will find that the vinegar passes out of the egg lining into the corn syrup and the egg sac becomes much smaller, with only the yolk and egg white remaining in the sac. It is a great way to get kids to hypothesize what will happen before each procedure. It also gets them to ask questions to do further experiments. Great fun!


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