2.6.2 Graphite: Structure & Properties Exam
Paper 4 Style • Structured Questions • Mark Scheme Hidden
Section A: Structure (5 Questions)
Q1How many bonds does each carbon atom form in graphite?
[1 mark]
Q2Describe the arrangement of carbon atoms in graphite.
[2 marks]
Q3Describe the forces between the layers in graphite.
[1 mark]
Q4What type of bond exists between carbon atoms within each layer?
[1 mark]
Q5State whether graphite is a giant covalent structure or a simple molecular structure.
[1 mark]
Section B: Uses as Lubricant (5 Questions)
Q6State one use of graphite that depends on its layered structure.
[1 mark]
Q7Explain why graphite is used as a lubricant.
[3 marks]
Q8Graphite feels slippery. Explain this property in terms of structure and bonding.
[2 marks]
Q9Compare the hardness of graphite within a layer to the hardness between layers.
[2 marks]
Q10Graphite is used in pencils. Suggest why layers of graphite rub off onto paper.
[2 marks]
Section C: Electrical Conductivity (5 Questions)
Q11State whether graphite conducts electricity.
[1 mark]
Q12Explain why graphite conducts electricity.
[3 marks]
Q13State one use of graphite that depends on its electrical conductivity.
[1 mark]
Q14Diamond does not conduct electricity but graphite does. Explain this difference in terms of electron structure.
[2 marks]
Q15Graphite is used as an electrode in the electrolysis of molten aluminium oxide. Suggest two reasons why graphite is suitable for this use.
[2 marks]
🎯 Exam Strategy Summary
Structure Keywords:
• Layered
• Hexagonal rings
• Weak forces between
• Strong covalent within
Lubricant Keywords:
• Layers slide
• Weak forces
• Easily separated
• Break off
Conductivity Keywords:
• Delocalised electrons
• Can move/carry charge
• One unbonded electron
• Free to move
⚠️ Remember: "Delocalised" is the MAGIC WORD for conductivity. "Free electrons" alone = 0 marks!
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