IGCSE Chemistry
2026 - 2028
Syllabus Checklist β
Topic 5: Giant Covalent Structures & Metallic Bonding
Giant Covalent Structures
Describe the giant covalent structures
of graphite
and diamond
Relate the structures
and bonding
of graphite
and diamond
to their uses
, limited to: graphite as a lubricant
and as an electrode
, diamond in cutting tools
Describe the giant covalent structure
of silicon(IV) oxide (SiOβ)
Describe the similarity in properties
between diamond
and silicon(IV) oxide
, related to their structures
Metallic Bonding
Describe metallic bonding
as the electrostatic attraction
between the positive ions
in a giant metallic lattice
and a sea of delocalised electrons
Explain, in terms of structure
and bonding
, the properties of metals
: good electrical conductivity
, malleability
, and ductility
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