Balloon Full of Carbon Dioxide
Effect of Pressure on Melting Point of Ice
The Liquid Phase of Carbon Dioxide
Vapor Pressure of Pure Liquids
Boiling Acetone at Reduced Pressure
Magic Sand Models the Hydrophobic Effect
Surface Tension: Floating Duck
Surface Tension of Water: The Floating Paper Clip
Will Tissue Hold Water? Interfacial Tension
Computer NaCl Crystal Cleavage
Variation of Volume of Water With Temperature
Surface Spreading and Surface Tension
Gel Formation with Sodium Alginate and Calcium Chloride
Boiling Acetone or Water at Room Temperature
Density of Sulfur Hexafluoride and Sublimation of Certain Gases
Liquid Phase of Carbon Dioxide
Description: Powdered dry ice is placed in a transparent tube equipped with a pressure gauge. As the dry ice sublimes, the pressure goes up. The solid melts at about 4 atmospheres gauge.
This demonstration is also available on video and on JCE Software “Chemistry Comes Alive!” Vol. 2 CD-Rom.
Source: Journal of Chemical Education
Year: 1989 Vol: 66 Page: 597
Keywords: Dry ice, Sublimation, Pressure, Liquefaction
Rating: 
Hazard: Some
- Cryogenic burn hazard
- Asphyxiation hazard
- Explosion hazard
Effectiveness: Good
- Results are observable with guidance
- Low failure rate
- Good connection from demo to course material
- Time to results is medium
Difficulty: Medium
- Demo performed at non-standard conditions
- Some intermediate steps to results
- Some strength-dependent manipulations
Safety Precautions:
- Cryogenic gloves required
- Eye protection required
- Perform in a well-ventilated area
- If video feed is used, then use UL approved three-prong plug and outlet
Class: Intermolecular forces, Equilibrium of Chemical Systems
Division: General, Physical Chemistry
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