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CAIE IGCSE Chemistry Giant Covalent Diamond and Graphite

CAIE IGCSE Chemistry Giant Covalent Diamond and Graphite
Cambridge IGCSE Chemistry 0620 syllabus for exams in 2026, 2027 and 20282026–2028

Practise describing diamond and graphite as giant covalent forms of carbon, including their carbon bonding counts and graphite's layered hexagonal arrangement.

How this is tested

  • identify diamond and graphite as allotropes of carbon with giant covalent structures
  • state that each carbon bonds to four others in diamond but three others in graphite
  • describe graphite as layers of hexagonal carbon rings joined by strong covalent bonds

Question 7

[Maximum number: 1]

The structures of diamond and graphite are shown.

Figure for Question 7 — CAIE IGCSE Chemistry
Figure for Question 7 — CAIE IGCSE Chemistry

Which statement about diamond and graphite is correct?

A

Diamond and graphite contain strong covalent bonds between carbon atoms.

B

Diamond and graphite have delocalised electrons.

C

Diamond and graphite have layered structures.

D

Diamond and graphite have low melting points.