Balloon Full of Carbon Dioxide
Effect of Pressure on Melting Point of Ice
The Liquid Phase of Carbon Dioxide
Vapor Pressure on Pure Liquids
Boiling Acetone at Reduced Pressure
Magic Sand Models the Hydrophobic Effect
Surface Tension: Floating Duck
Surface Tension: The Floating Paper Clip
Will Tissue Hold Water? Interfacial Tension
Variation of Volume of Water With Temperature
Surface Spreading and Spreading 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
NaCl Crystal Cleavage
Description: Video of NaCl crystals being cleaved to show that they break off corresponding to their crystal structure. This demo can be performed live as well.
This demonstration is also available on JCE “Chemistry Comes Alive!” Vol.2 CD-Rom.
Source: JCE “Chemistry Comes Alive!”
Year: 1999 Vol: 76 Page: 1311
Keywords: NaCl Crystal, Crystal structure, Cleavage, Primitive cubic, Razor
Rating: 
Hazard: Some
- Sharps hazard
- Electric shock hazard
Effectiveness: Average
- Results are observable with guidance
- Moderate failure rate
- Mild effects are seen by audience
- Good connection from demo to course material
- Time to effects is low
Difficulty: Medium
- Coordinated procedures required
- Careful manipulations
- Demos in which a display is used
Safety Precautions:
- Eye protection required
- Sharps container on hand recommended
- Use of UL approved three-prong plug and outlet required
Class: Crystal Structure, Solid, Physical Chemistry, Solid State Chemistry
Division: General, Material Science/ Solid State Chemistry
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