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 a 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
Density of Sulfur Hexafluoride and Sublimation of Certain Gases
Description: Samples of Sulfur Hexafluoride and Carbon Dioxide are added to clear and colorless balloons. The balloons are cooled in Liquid Nitrogen, until they undergo solidification. The balloons are shaken to reveal the solids inside. This relates to intermolecular forces of certain gases based on their molecular structure. In another experiment, a thin foil “boat” is made from metal foil and made to float in a fish tank half filled with Sulfur Hexafluoride.
Sources: UW Card Catalog
Year: N/A Vol: N/A Page: N/A
Keywords: Sulfur Hexafluoride, Density, Sublimation, Intermolecular forces, Molecular structure, Gases
Rating: 
Hazard: Medium
- Asphyxiation hazard
- Cryogenic burn hazard
- Electric shock hazard
Effectiveness: Average
- Results are observable with guidance
- Time to results is low
- Good reliability
- Contrast between behavior of systems is noticeable
- Somewhat connected to course material
Difficulty: Medium
- Reactions of demos at non-standard conditions
- Some intermediate steps to results
- Simple manipulations for most to perform
Safety Precautions:
- Eye protection required
- Thermal gloves required
- Prepare in a well-ventilated area
- Use UL approved three-prong plug and outlet
Class: Gases
Division: General Chemistry
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