May/June 2026 Paper 42

2026 · 6 questions · 45 parts · 80 marks

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2(a)(i)Covalent BondingMedium7 marks

Bonding is the attraction between particles. The particles can be atoms, molecules, ions or electrons. Bonding can be strong or weak.

Complete Table 2.1 to describe the strong bonding in the substances shown.

	sodium chloride	bromine	magnesium	silicon(IV) oxide
type of strong bonding	ionic	Table answer r1_bromine	Table answer r1_magnesium	covalent
symbol of particle attracted	Na $^{+}$ and Cl $^{-}$	Table answer r2_bromine	Table answer r2_magnesium	Table answer r2_silicon(IV) oxide
type of particle attracted	ions	Table answer r3_bromine	ions and electrons	Table answer r3_silicon(IV) oxide

2(a)(ii)Intermolecular Forces Physical PropertiesEasy1 mark

Name the weak attractions that are overcome when bromine boils.

2(b)(i)Ionic Bonding Ionic StructuresEasy2 marks

Sodium chloride and silicon(IV) oxide both have a lattice structure. Describe the arrangement of ions in sodium chloride.

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2(b)(ii)Giant Structures Metallic BondingEasy1 mark

Name a substance that has a giant covalent lattice and similar properties to silicon(IV) oxide.