Comparing the Specific Heat of Metals I
Comparing the Specific Heat of Metals II
Paramagnetism of Transition Metal Salts
Computer NaCl Crystal Cleavage
Octahedral, Hexagonal, and Tetrahedral Shapes
Thermoluminescent Sodium Chloride
Jars of Sand Representing Electron Flow in a Band
Temperature Dependence on Resistance
Thermal Conductivity of Metals
Glycerine Tube Representing Hole Energies
Counting Photons Using a Solar Cell
Effect of Pressure on the Melting Point of Ice
Fixed Ball and Stick Crystal Models
Bubble Raft
Description: Small bubbles are made in bubble solution using an aquarium pump. As the bubbles move out over the raft, they form a hexagonal close pack arrangement
This demonstration is also available on JCE Solid State Resources CD-Rom.
Source: Ellis, A. et al. Teaching General Chemistry: A Material Science Companion
Year: 1993 Vol: N/A Page: 100
Keywords: Bubbles. Hexagonal Arrangement, Close packing, Simulation
Ratings: 
Hazard: Low
- Electric shock hazard
Effectiveness: Average
- Good connection from demo to course material
- Results are observable with guidance
- Moderate failure rate
- Time to results is medium
- Mild effects are seen by audience
Difficulty: Medium
- Careful manipulations required
- Some intermediate steps to results
- Demonstrations in which display or projection is used
- Prior training recommended
Safety Precautions:
- Use of UL approved three-prong plug or outlet required
- Eye protection is required
Class: Solid State Chemistry
Division: General, Solid State Chemistry