Preventing Pop From Exploding – Friday Fun with Frederick and Fleming

friday fun2

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Next time you accidentally drop your can of pop you won’t have to wait minutes to open it up.  We show you how to open it right then and there.

Instructions:

  • Tap the outside of the can on all sides 

Science:

When a can of pop is dropped or shaken up, carbon dioxide bubbles (the fizz) collects to the sides of the pop can.  This increases the pressure in the can.  In a normal situation, the can is opened and the carbon dioxide bubbles race to the opening of the pop can, where the pressure is lower (as with all fluids, they move from high to low pressure).  In the process, the liquid that is in the way, is pushed through the can opening as well, causing us to be soaked in pop.  By tapping the outside of the can, you knock the carbon dioxide bubbles from the side of the can and they “float” to the top.  If all of the carbon dioxide bubbles are at the top, when the can is opened, there is no liquid in the way that the bubbles push out of the can, and only the gas is released when the can is open, not the liquid as well.

 

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