Diamond and graphite - fullerenes and graphene

• What are allotropes of carbon?

  Different forms of the same element
• Why do simple molecules have low melting and boiling points?

  Weak intermolecular forces require less heat to break
• Why don't simple molecules conduct electricity?

  They have no free or charged electrons
• What is the shape of diamond?

  Pyramid-like structure
• How are atoms bonded in diamond?

  Each atom is bonded to four others
• What type of structure does diamond have?

  3D lattice structure
• Why is diamond very hard?

  Due to its rigid lattice structure
• Why does diamond have a high melting point?

  Strong covalent bonds require more heat to break
• Why can't diamond conduct electricity?

  It has no free electrons or charged ions
• What is the structure of graphite?

  Layers of hexagonal shapes
• Why is graphite soft and slippery?

  Layers can slide over each other
• How does graphite conduct electricity?

  It has delocalised electrons between layers
• Why does graphite have a high melting point?

  More heat is needed to break bonds
• What are fullerenes?

  Allotropes of carbon with hollow structures
• What is Buckminsterfullerene's molecular structure?

  Spherical shape with 60 carbon atoms
• Why do fullerenes have a low melting point?

  Weak intermolecular forces require less heat
• Why are fullerenes soft and slippery?

  Layers can slide over each other
• How well do bucky balls conduct electricity?

  They conduct poorly due to localized electrons
• What are the key properties of diamond?

  • Very hard due to rigid lattice
  • High melting point due to strong bonds
  • Does not conduct electricity (no free electrons)
• What are the key properties of graphite?

  • Soft and slippery due to sliding layers
  • Conducts electricity (delocalised electrons)
  • High melting point due to strong bonds
• What are the key properties of fullerenes?

  • Spherical shape with 60 carbon atoms
  • Low melting point due to weak forces
  • Soft and slippery due to sliding layers
• What is the molecular formula of Buckminsterfullerene?

  C$60$
• What are two uses of fullerenes?

  • Delivering medicine
  • Catalysts in chemical reactions
• What distinguishes graphene from graphite?

  • Graphene is a single layer of carbon atoms
  • Graphene has a 2D structure
  • Graphene has stronger bonds than graphite