IGCSEChemistryOxford AQARevision NotesStructure, Bonding & the Properties of MatterHow Bonding & Structure are Related to the Properties of SubstancesProperties of Metallic Compounds

Properties of Metallic Compounds (Oxford AQA IGCSE Chemistry)

Revision Note

Alexandra Brennan

Expertise

Chemistry

Conductivity of Metallic Compounds

Extended Tier Only

  • Metals consist of positively charged metal ions surrounded by a sea of delocalised electrons 

  • Metals conduct electricity because:

    • The delocalised electrons are able to move through the structure 

  • The electrons being able to move also enables the metal to conduct heat 

The structure of a metal

Diagram explaining how delocalised electrons can move through the structure of a metal allowing it to conduct
Delocalised electrons are able to move through the structure

Exam Tip

The properties of metals can be modified, sometimes significantly, by mixing it with another metal or non-metal to create and alloy.

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    Alexandra Brennan

    Author: Alexandra Brennan

    Alex studied Biochemistry at Newcastle University before embarking upon a career in teaching. With nearly 10 years of teaching experience, Alex has had several roles including Chemistry/Science Teacher, Head of Science and Examiner for AQA and Edexcel. Alex’s passion for creating engaging content that enables students to succeed in exams drove her to pursue a career outside of the classroom at SME.