Activity Time: Naked Egg, Part 2

Welcome back! If you haven’t made some naked eggs, check out Naked Egg, Part 1! If you have your naked eggs ready to go, you can try a few more experiments!

Do you remember how we talked about osmosis up on Tuesday? We are going to talk about that more today.

Here is what you will need:

  • Naked eggs from part 1
  • Clear jars or cups
  • Corn syrup
  • Water
  • Food coloring
  • Optional: Scale and chart from part 1

There are a three different experiments you can do with your naked eggs, check them out below! Be sure to label your jars and take measurements.

  1. Make your naked egg grow!
    • Put your egg into a jar of water.
  2. Color your egg!
    • Add some food coloring to the water in your jar.    
    • This is a good way to show osmosis.  As the egg takes in the colored water, it will change color!

I made my colored water a bit dark, and ended up with some really creepy looking eggs.

  1. Make your egg shrink! And grow again!
    • Add your egg to a jar of corn syrup.  Corn syrup has very little water in it.  And as we learned from osmosis, the water will leave the egg and flow into the corn syrup.  

Here is how the weight changed on this egg

At start of experimentAfter Vinegar After Corn Syrup After Water 
55 grams85 grams37 grams86 grams

What experiments did you do with your naked eggs. Tell us in the comments below or share your pictures on Facebook and tag us! I hope you enjoy this experiment as much as I do.

Cindy

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