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
Effect of Pressure on Melting Point of Ice
Description: Two weights connected by piano wire are hung on a bar of ice. The wires cuts through the bar of ice. The ice refreezes, remaining intact when the weights drop to the table top.
Source: UW Card Catalog
Year: N/A Vol: N/A Page: N/A
Keywords: Weights, Piano wire, Ice, Pressure, Melt, Refreeze
Rating: 
Hazard: Low
- Injury hazard- Laceration
Effectiveness: Good
- Strong effects are seen by audience
- Demo has good connection to course material
- Clear contrast between behavior of systems
- Time to results is medium
- Moderate failure rate
Difficulty: Medium
- Careful placement is required
- Demos at non-standard conditions
- Prior practice recommended
Safety Precautions:
- Avoid putting pressure on wire
- Cryogenic gloves are required
- Eye protection is required
Class: Liquids and Solids, Solid State Chemistry, Intermolecular Forces, PV Diagram
Division: General, Solid State/Material Science Chemistry, Physical Chemistry
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