1. Diamond Tetrahedral Lattice of Carbon

2. Graphite Sheets or Layers of Rings of Carbon

3. DiamondGraphite

4. C 60 Buckminsterfullerene

6. Metallic Bonding (Bonding in Metals) We often refer to this as a “sea of electrons” as it helps explain the properties of metals such as conductivity and malleability.

7. What about Silicon? Metal or Non-Metal?

8. What about Silicon? Metal or Non-Metal? Tetrahedral arrangement of Si atoms; very strong; conductor when doped, what we know as a semi-conductor.

9. Silicon

10. What about Silicon Dioxide? Quartz (crystalline SiO 2 ) Sand (crushed crystalline SiO 2 )

11. Structure and Bonding in Silicon Dioxide

12. SiO 2 Amorphous and Everywhere

13. Silicon Dioxide: Not Just Glass and Sand