Friday, July 3, 2015

Gas Experiment: Contraction of Heated Air as It Cools

Here was another fun experiment.

Same glass bottle.  Similar balloon.

I filled the glass bottle with boiling water and swirled the water around so the air in the bottle was thoroughly heated.  I then poured out the hot water and quickly placed the balloon over the neck.

Over the next hour, the air in the bottle cooled down and contracted.  Normally, new air would be pulled into the bottle but since the balloon was blocking air from outside coming in...

This happened...


Coolness, huh?

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