English National Curriculum - Science

Metallic bonding & structures

Mission Objectives

Describe metallic bonding

Describe and explain the physical properties of metals

Explain why alloys are harder than pure metals

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Keywords

Words and meanings to learn

metallic bonding

the strong attraction between positive metal ions and a sea of delocalised electrons

delocalised

electrons that are not fixed to one atom and are free to move throughout a structure, such as in metals

electrons

negatively charged subatomic particles found in energy levels (shells) around the nucleus of an atom

alloy

a mixture of a metal with one or more other elements, often other metals

ions

atoms or molecules that have gained or lost electrons, giving them a positive or negative charge

This lesson has been written by

Samantha Batch

Samantha is an accomplished science educator with over 15 years of leadership experience and a strong background in scientific analysis. She has a proven record of leading departments effectively, improving practice, and working collaboratively with stakeholders.

In her current work, Samantha embeds evidence-informed pedagogical principles such as retrieval practice, clear modelling, and effective sequencing to support high-quality curriculum design and professional development. She draws on assessment insight and common misconceptions to help teachers secure strong student understanding.

She is a former Head of Chemistry and Sixth Form Tutor at Ilkley Grammar School, with extensive Key Stage 4 and 5 experience, and an AQA examiner, giving her valuable insight into assessment standards and exam requirements.

In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket. 

Required Resources

Shape memory alloys - if possible

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