Boyle’s Law and the Mass of a Textbook
Effect of Pressure on the Size of a Balloon
Egg in a Flask – Thermal Decrease in Molar Volume
Flow of Gases Through a Porous Cup
Rate of Diffusion: The Ammonium Chloride Ring
Boltmann: Digital Simulation of Kinetic Molecular Theory
Boyle’s Law and the Monster Marshmallow
PhET Simulation of Gas Behavior
Effect of Pressure Differences on a Balloon in a Flask
Extinguishing Candles with Carbon Dioxide
A Metal Bar to Demonstrate One Atmosphere
Relation of Gas Pressure and Temperature
Transport of Carbon Dioxide Through a Soap Film
Digital Molecular Theory Simulator
Thermal Expansion of Gases
Description: Pouring liquid nitrogen on a blown-up balloon causes the balloon to shrink.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1985 Vol: 2 Page: 24
Keywords: Balloon, Volume vs. Temperature, Molecular velocity, Boltzmann’s Distribution
Rating: 
Hazard: Some
- Cryogenic burn hazard
- Asphyxiation hazard
- Inhalation hazard
- Implosion hazard
Effectiveness: Good
- Good connection from demo to course material
- Results are clearly observable without guidance
- High reliability
- Time to results is medium
- Mild effects are seen by audience
Difficulty: Medium
- Reactions or demos at non-standard conditions
- Concerted manipulations
- Handling of cryogenic materials
- Some intermediate steps to result
Safety Precautions:
- Gloves/Cryogenic gloves required
- Perform in well-ventilated area
- Temperature resistant surface recommended
- Eye protection required
- Handle Dewar flask with care
Class: Gas Laws, Physical Behavior of Gases
Division: General, Physical Chemistry
Return to General Chemistry Demonstrations