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CSEC Chemistry · May/June 2016 · Paper 2 · Question 4(a)

Graphite and diamond are two allotropes of carbon. Define the term 'allotrope'. Illustrate your answer by drawing the lattice structures for both diamond and graphite.

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  1. 4(b)(i)Describe the bonding present in metals.[2 marks]
  2. 4(b)(ii)Explain, in terms of bonding, why graphite conducts electricity but diamond does NOT conduct electricity.[2 marks]
  3. 4(c)Sodium chloride and calcium oxide both have similar giant ionic crystalline structures with high melting points. However, the melting point of calcium oxide is…[5 marks]

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