Drinking Candle and Air Pressure

Although you cannot usually see it, air takes up space! When it is heated, it expands and takes up more space than when it is cool - think of a hot air balloon!

In this experiment, we will be seeing atmospheric pressure changes in front of our eyes as we increase the air pressure inside the glass and then watch what happens when the air cools. The air inside and outside the glass wants to be the same and so some interesting things will happen as it levels out - make sure to keep a close watch at the water!

For instructions, use this printable PDF instructions to do the experiment!

Share your results on our Facebook page!

Also, be sure to tune in to ABC11 Science Club with BASF every other Wednesday!
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