Types of Structures

Question 1

Describe Giant Metallic structure.

Answer 1

• Bond = metallic
• Malleable/Ductile
• Non-directional bonds
• High melting and boiling points
• Strong electrostatic forces
• Good conductor

Question 2

Describe Giant Ionic structure.

Answer 2

• Bond = ionic
• Brittle
• Conducts when molten/aqueous
• High melting and boiling point
• Strong electrostatic forces

Question 3

Describe Giant Covalent structure.

Answer 3

• Diamond, silicon(IV) oxide
• High melting and boiling points
• Strong covalent bonds
• Non-conductors

Graphite:
- Can conduct due to free electron
- Hexagonal layers joined by Van der Waals forces

Question 4

Describe Simple Molecular structure.

Answer 4

• H2O, buckminsterfullerene, Cl2, CH3OH
• Hydrogen bonding
• pd-pd
• London dispersion
  The stronger the IMF:
• Higher melting and boiling points
• More viscous
• Less volatile