IGCSEScienceOxford AQACombined Science Double AwardChemistryRevision 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 Combined Science Double Award)

Revision Note

Alexandra Brennan

Written by: Alexandra Brennan

Reviewed by: Stewart Hird

Oxford AQA Combined Science Double Award: ChemistryOxford AQA Chemistry

Conductivity of Metallic Compounds

Extension 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

Examiner Tips and Tricks

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

    Expertise: Chemistry

    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.

    Stewart Hird

    Author: Stewart Hird

    Expertise: Chemistry Lead

    Stewart has been an enthusiastic GCSE, IGCSE, A Level and IB teacher for more than 30 years in the UK as well as overseas, and has also been an examiner for IB and A Level. As a long-standing Head of Science, Stewart brings a wealth of experience to creating Topic Questions and revision materials for Save My Exams. Stewart specialises in Chemistry, but has also taught Physics and Environmental Systems and Societies.