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

delocalised

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

metallic bonding

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

ions

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

alloy

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

electrons

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

This lesson has been written by

Samantha Batch

Samantha is an accomplished science educator whose current work centres on curriculum design and professional development, supporting teachers to deliver high-quality science education through evidence-informed approaches. She is a former Head of Chemistry and Sixth Form Tutor with extensive Key Stage 4 and 5 experience, and has worked as an AQA examiner, giving her valuable insight into assessment standards and what students need to succeed.

Samantha has written the complete KS4 Science curriculum, fully aligned with the AQA GCSE Science: Trilogy specification. Covering biology, chemistry and physics, the curriculum is carefully sequenced so that students build knowledge cumulatively and see clear connections between concepts across the three sciences. Drawing on her experience as an examiner and on research into effective teaching, she has designed it to embed retrieval practice, clear explanation, worked examples and the required practicals throughout, preparing students for the demands of the GCSE exams. Grounded in the realities of the classroom, the curriculum is rigorous for students and manageable for busy teachers.

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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