elementary substances of C

What structure is shown in the diagram?

• Diamond
• Graphite
• Carbon fiber
• Carbon nanotubes

How many bonds will a C atom form?

• 1

• 2

• 3

• 4

Which has a 2D hexagonal layered structure?

• graphite
• diamond
• fullerene
• all of these

Which has a 3D hexagonal structure?

• graphite
• diamond
• fullerene
• none of these

Conduct electricity

• diamond
• graphite
• both

Each carbon atom joined to three other carbon atoms -

• diamond

• graphite

• both

Atoms arranged in layers

• diamond
• graphite

Which of these is used as a lubricant?

• diamond

• graphite

Which of this is used in drill bits?

• diamond

• graphite

• SiO2

_____ can conduct electricity because it has _____ _____

• diamond

• graphite

• localised electrons

• delocalised electrons