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
Glycerine Tube Representing Hole Energies
Description: When inverted, a bubble will move from the bottom to the top of the tube. By analogy, holes are like bubbles. They will move to the top of the band (tube) to reach the lowest energy.
This demonstration is also available on JCE Solid State Resource CD-Rom.
Sources: Ellis, A. et al Teaching General Chemistry: A Material Science Companion
Year: 1993 Vol: N/A Page: 240
Keywords: Bubble, Holes, Energy, Simulation
Rating: 
Hazard: Low
- No use of toxic chemicals
- Simulation
Effectiveness: Average
- Somewhat connected to course material
- Results are observable with guidance
- Mild effects are seen by audience
- Simulation
Difficulty: Low
- Simple procedures
- Simple manipulations for most to perform
Safety Precautions:
- Eye protection required
- Gloves required
Class: Solid State Chemistry, Simulation
Division: Solid State Chemistry