Topic 3 Electrolytic processes Chemistry Unit C3 Chemistry in action Edexcel gcse separate triple award science

Doc Brown's Edexcel GCSE Science-Chemistry Revision Notes

EDEXCEL GCSE Chemistry Unit C3 Chemistry in action STUDY NOTES

Chemistry Unit C3 Topic 3 Electrolytic processes Revision Notes

3.1 Be able to explain that electrolytes are ionic substances in the molten state or dissolved in water.
3.2 Be able to describe the movement of ions during electrolysis, such that:
- a) positively charged cations migrate to the negatively charged cathode
- b) negatively charged anions migrate to the positively charged anode
3.3 Be able to demonstrate an understanding that oxidation can involve the loss of electrons and reduction can involve the gain of electrons.
3.4 Be able to demonstrate an understanding that reduction occurs at the cathode and that oxidation occurs at the anode in electrolysis reactions.
3.5 HT only: Be able to write half equations for reactions occurring at the anode and cathode in examples of electrolysis reactions in this unit.
3.6 Be able to describe the manufacture of sodium by the electrolysis of molten sodium chloride (details of the electrolytic cell are not required).
3.7 Know that sodium can be used in street lamps and as a coolant in some nuclear reactors.
3.8 Revise the electrolysis of sodium chloride solution investigation.
3.9 Be able to explain the formation of the products in the electrolysis of sodium chloride solution.
3.10 Be able to describe how the electrolysis of aqueous solutions can give products from ions in water, rather than from ions of the dissolved solid
3.11 Be able to explain the formation of the products in the electrolysis, using inert electrodes, of some electrolytes, including:
- a) copper chloride solution
- b) copper sulfate solution
- c) sodium sulfate solution
- d) molten lead bromide
3.12 Revise the investigation on the mass changes at the electrodes during the electrolysis of copper sulfate solution using copper electrodes.
3.13 Be able to describe the purification of copper by electrolysis using a pure copper cathode and an impure copper anode.
3.14 Be able to explain how electroplating can be used to improve the appearance and/or the resistance to corrosion of metal objects.
Revision Notes and Quizzes to help you revise
- Edexcel GCSE CHEMISTRY
- When revising, these pages provide you with a summary of what you need to know and be able to do.
- BUT remember, your primary source of revision are your class notes, investigations and Edexcel GCSE science textbooks.
- Electrochemistry Notes - an introduction to electrolysis, theory, electrolysis cells
- Halogen Notes - section on the electrolysis of sodium chloride solution
- Extraction of Sodium Notes
- Purification of Copper by electrolysis and electroplating
- Matching pair quiz on the basics of electrolysis
- Wordfill worksheet on the electrolysis of salts

EDEXCEL GCSE Science CHEMISTRY 3 UNIT 3 C3 Chemistry in action INDEX

ALL Edexcel GCSE Science Units: Edexcel GCSE Science Biology Unit B1 Influences on life

Edexcel GCSE Science Biology Unit B2 The components of life * Edexcel GCSE Science Unit B3 Using biology

Edexcel GCSE Science Unit C1 Chemistry in our world * Edexcel GCSE Science Unit C2 Discovering Chemistry

Edexcel GCSE Science Unit C3 Chemistry in action * Edexcel GCSE Science Unit P1 Universal Physics

Edexcel GCSE Science Unit P2 Physics for your future * Edexcel GCSE Science Unit P3 Applications of Physics

GCSE Science-Chemistry courses AQA GCSE Science A CHEMISTRY * EDEXCEL GCSE Science CHEMISTRY

OCR GCSE 21st Century Science A CHEMISTRY * OCR GCSE Gateway Science B CHEMISTRY

WJEC GCSE Science-CHEMISTRY * Northern Ireland CCEA GCSE Science-CHEMISTRY

** Doc Brown's Edexcel GCSE Chemistry Revision







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