English National Curriculum - Science

Introduction to electrolysis

Mission Objectives

Define electrolysis and describe the conditions needed for this process to occur

Write word and symbol equations for the electrolysis of molten ionic compounds

Predict and explain the products formed during the electrolysis of molten compounds

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Keywords

Words and meanings to learn

electrolysis

the process of using electricity to break down a solid structure - such as a giant ionic lattice or a metal lattice - into its elements

electrolyte

a liquid or solution that contains free-moving ions and can conduct electricity

ions

electrically charged particles, formed when an atom or molecule gains or loses electrons

molten

a term used to describe a liquid substance (e.g., rock, glass or metal) formed by heating a solid

electrode

a conductor (either carbon or an un-reactive metal) used to establish electrical contact with a circuit

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. 

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