4E10.20 - Thermal Pressure with Helium Balloon


Thermal Pressure with Helium Balloon.
Thermal Pressure with Helium Balloon.



Code: 4E10.20


Demo Title: Thermal Pressure with Helium Balloon


Subject: Constant Pressure


Description:
Cooling a helium filled balloon with LN2 demonstrates gas behavior when cooled and when warmed.


Procedure:

  • Roll helium balloon in liquid nitrogen and have the students note that the balloon gets smaller and smaller
  • Then, take the balloon out of the liquid nitrogen and put it on the table
  • Note that the balloon will immediately re-expand after taken out of the LN2, so try to catch it with the plastic dome before it floats to the ceiling


Video URL:


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