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
B-B Trays
Description: BB trays are shaken on an overhead projector. Stopping the BBs will produce a close packing arrangement.
Source: Ellis, A. al et. Teaching General Chemistry: A Material Science Companion
Year: 1993 Vol: N/A Page: 100
Keywords: BB tray, BB board, Close packing, Point defects, Slip planes
Rating: 
Hazard: Low
- Simulation
- No use of chemicals
Effectiveness: Average
- Results are observable with guidance
- Good connection from demo to course material
- Mild effects are seen by audience
- Time to results is low
Difficulty: Low
- Procedures are simple
- Manipulations are simple for most to perform
- Prior training recommended
Safety Precautions:
- Use of UL approved three-prong plug and outlet if using overhead projector
- Eye protection recommended
Class: Solid State Chemistry
Division: General, Solid State Chemistry