Structures & Bonding, Comparing Materials, OCR A-Level Chemistry, M2

This comprehensive OCR A Level Chemistry PowerPoint lesson explores giant covalent structures and compares how different types of bonding determine the physical properties of materials.

Designed for OCR Chemistry A (H032/H432), Module 3: Periodic Table and Energy, this resource covers specification points 3.1.1(e) and 3.1.1(f) – Periodicity, while consolidating bonding concepts from Module 2. It is ideal for Year 12 students developing their understanding of structure, bonding and physical properties.

The lesson introduces giant covalent lattices as continuous networks of atoms joined by strong covalent bonds. Students explore the structures of diamond, graphite, graphene and silicon, investigating how differences in atomic arrangement and bonding produce different physical properties.

The PowerPoint examines diamond’s tetrahedral structure, strong covalent network, high melting point and lack of electrical conductivity. Students then investigate graphite’s layered structure, delocalised electrons and weak forces between layers, explaining its electrical conductivity and lubricating properties.

Graphene is explored as a single layer of carbon atoms arranged in a hexagonal structure, with particular attention given to its strength, electrical conductivity and potential applications. Silicon is also introduced as a giant covalent substance.

Students compare giant ionic, giant metallic, giant covalent and simple molecular structures, explaining differences in melting and boiling points, solubility and electrical conductivity using structure and bonding.

Throughout the lesson, diagrams, comparison tables, structured activities and application questions help students develop exam-relevant explanations linking microscopic structure to macroscopic properties.

Supplied as an editable PowerPoint presentation (.pptx), this resource is suitable for classroom teaching, independent practice, revision and consolidation.

Last updated: November 2026.