AQA GCSE 9-1 Chemistry Unit 4 Chemical changes 4.3 Electrolysis

4.4.3 Electrolysis
4.4.3.1 The process of electrolysis
4.4.3.2 Electrolysis of molten ionic compounds
4.4.3.3 Using electrolysis to extract metals
4.4.3.4 Electrolysis of aqueous solutions
Required practical 3: investigate what happens when aqueous solutions are electrolysed using
inert electrodes. This should be an investigation involving developing a hypothesis.
4.4.3.5 Representation of reactions at electrodes as half equations (HT only)

Content split over 12 lessons -but more including practical lessons (lessons in our school are 40 minutes so can condense material for longer lessons if required)
All exam questions have been removed for copyright purposes
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying

Lesson 1: Electrolysis the basics
To recall the properties of ionic compounds from year 9
To understand the terms electrolysis, electrolytes, anode, cathode and electrodes
To explain the movement of ions during electrolysis

Lesson 2 + 3 Molten PLUS DEMONSTRATION AND HT 1/2 equations
To explain OILRIG in terms of electrodes
To watch the demonstration of the electrolysis of lead bromide
To explain how to predict the products of electrolysis of molten ionic solids with half equations (HT)

Lesson 4: Extracting metals (Aluminium)
To recall how metals are extracted from ores
To explain how aluminium is manufactured
To write half equations

Lesson 5 + 6: Aqueous PLUS HT 1/2 equations
To recall the preferential discharge of ions
To explain how to predict the products of electrolysis of aqueous solutions
To consolidate learning

Lesson 7, 8 and 9: PRACTICALS and HT 1/2 equations
To devise a hypothesis about the products that will be formed at the electrodes
To complete a practical
To consolidate learning

Lesson 10: Electrolysis of Water
To observe the electrolysis of water
To explain the electrolysis of water
To consolidate learning by reviewing the practical completed on aqueous solutions

Lesson 11: Copper
To investigate the change in mass of the anode and of the cathode, when copper sulfate solution is electrolysed between copper electrodes
To explain how this process can be used to purify copper
To explain the reactions taking place at the copper electrodes (H)

Lesson 12: RUSTING
To explain how experimental results can be used to show the conditions necessary for rusting
To explain in detail how to prevent iron from rusting
To consolidate using questions