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Helium Balloon in Liquid Nitrogen: Qualitative Testing Experiment
Aim
Test two models working together: Archimedes principle and your understanding of the relationship between the temperature and volume of a gas.
Prior Knowledge
- Understanding of pressure in balloons.
- Knowledge of the relationship between temperature and volume of a gas.
- Archimedes Principle.
Description of the Experiment
Predict what will happen when liquid nitrogen is poured over a balloon filled with helium. What happens to the volume of the balloon? Will the balloon sink or rise up? What will happen as the balloon heats back up to room temperature?
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Questions
Did your observations agree with your prediction? If not, try and explain what you saw.
