Kids will love this rainbow variation on the classic naked eggs experiment. Don’t just make naked rubber eggs, make rainbow rubber eggs!
My kids like colorful, dramatic science experiments. There is nothing tame or boring about making rainbow naked eggs! This experiment has both the “wow” factor and the gross factor that will make confirmed science lovers for life.
STEM Activity Ideas: Rainbow Naked Eggs Experiment
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In just a few hours, you can completely transform eggs and remove the shell.
What you’ll need to make rainbow naked eggs:
7Fill each container about 1/2 full of vinegar. Add about 10 drops of food coloring to each jar.
Carefully place a raw egg inside each jar. Let the eggs sit for about 48-72 hours in the vinegar. Try putting other eggs in different liquids to see if they produce a different or similar reaction.
Over time, the vinegar will break down the calcium on the egg’s shell, leaving the egg completely whole, but soft.
When the surface of the water has a weird scummy film, the eggs are ready to come out.
Remove the eggs from the jars (carefully) and rinse them in water.
They are completely colored!
Gently roll and bounce the eggs and watch what happens!
When the kids are done admiring the eggs, break them open. The kids might be surprised to see that the egg yolk is still yellow! The high protein content of the yolk prevents the egg’s cells from absorbing the colored liquid that is absorbed by the rest of the egg.
Naked Egg STEM Integration
Transform this science experiment into a STEM project by asking a few extra questions and adding variables. Will shells dissolve in different materials? What happens if you use a different kind of dye? Will eggs change color without the help of vinegar? Experiment with different liquids, like soda, water with baking soda added, milk, coffee, water, and oil.
After removing the eggs from the vinegar, watch what happens when you let them sit out on the counter without any liquid. Do they dry out? What happens if you put the eggs in a salt solution?