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Naked Egg Science Experiment

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While I was looking for the science experiment about Bending Chicken Bones, I came across this Naked Egg Science Experiment from Imagination Station as well. Though we have done it before, the boys were really quite young and probably don’t remember doing it, so we did it again.

Naked Egg Experiment a

What you need:

a jar or cup

vinegar

egg

What you do:

Place the egg into the jar and cover with vinegar

Look closely at the egg and see what is happening

Let the egg sit for around 24 hours and then replace the vinegar

Put the jar in a safe place and let the egg sit for around 1 week

When the week is up, carefully rinse the egg with water

You now have a naked egg! (An egg without a shell)

Naked Egg Experiment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The egg after it had been in the vinegar for two days. 

naked egg1

 

A normal egg on the left and the naked egg on the right!

How does it work?

The vinegar, which is a mild acid, reacts with the calcium carbonate in the shell of the egg causing it to break up into two parts: calcium and carbonate. The calcium is what you see floating around in the vinegar and the carbonate reacts to form the carbon dioxide bubbles that you see.

Some of the vinegar does sneak into the egg, so it will look a bit bigger. This is called osmosis.

Note: Our little boy asked if this egg is okay to eat. I recommend that you DO NOT eat this egg! It could make you very sick.

I have a Science Experiment Activity Sheet if you wish to write up this science experiment.  You can download it for free by clicking the link below.

Science Experiment Worksheet

 

To take this experiment one step further, we then placed the egg in a jar and covered it with water. This time we added a few drops of red food colouring to the water.

After a couple of days, we checked the egg again. This time it was a lot bigger and redder.

egg thing

 

Then we thought we would open it and see if the red food colouring seeped in at all.

egg thing 2

 

As soon as I put a knife into the egg, it exploded (Good thing I did this is a bowl!) and this was the mess we were left with. All the white had turned red! The boys were amazed!

 

 

Category: Homeschooling, Kids ActivitiesTag: Experiments, Grade 1, Grade 2, Kindergarten, PreK, Preschool, Science

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