Science @ Home: Pop, Fizz, Expand–Kitchen Science With a Kick!

When you’re a kid it seems like everything messy is fascinating. The bigger the mess, the better the time. The same could probably be true for adults if they weren’t partially responsible for helping clean up. Well, at the Boonshoft Museum we are all about making a mess in a safe environment, especially if we can learn something from it!

This month’s Science @ Home experiment turns your kitchen into a chemistry lab by mixing some delicious confections! We’ve all heard the “explosive” urban legend about drinking a pop while guzzling Pop Rocks. While that is not entirely true (no, your tummy won’t explode!), the combination does produce a lot of gas. Try this classic experiment to see for yourself!

Pop, Fizz, Expand – Pop Rocks and Soda

You Will Need:

  • A Few Packs of Pop Rocks
  • Balloons
  • 12-16 oz bottle of pop (if you want to expand on the experiment, try a variety)
  • A Notebook and Pen to Record Your Observations

Experiment:

1) Open the first bottle of pop and pop rocks. Pour out a little soda to make room for the fizz.

SodaLivingDayton PopRocksLivingDayton

2) Empty the entire contents of the pop rocks pouch into the bottle of pop.

PouringPopRocksLivingDayton

3) Immediately place the balloon over the opening of the pop bottle.

BalloonLivingDayton

4) Observe what is happening to the pop and the balloon.

5) Optional: Repeat the experiment with different types of pop.

What’s Happening?

Infamous for the popping sensation in your mouth, Pop Rocks contain pressurized carbon dioxide gas. Once the saliva from your mouth wears town the candy shell the carbon dioxide is released from it’s shell, creating a popping sound. The same is true for pop, a carbonated drink that gets it’s bubbles from pressurized carbon dioxide. The mixture of the pressurized carbon dioxide in the candy and combined with the pressurized carbon dioxide gas from the pop creates so much gas, it needs to leave the bottle so it fills the balloon.

Take it further:

Try using different flavors of pop rocks and different kinds of pop. Are there different reactions? Does the balloon fill up faster, slower, or the same?

To see more experiments watch our full segment on Living Dayton below:

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Make sure you don’t miss a Science @ Home experiment by signing up for the Boonshoft Museum’s E-Newsletters and be sure to follow us on Pinterest.

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