AQA A-Level Chemistry: Redox Reactions - Videos & Lessons

About This Chapter

Let us help you prepare for the AQA A-Level Chemistry test with this review of redox reactions. Expert instruction, entertaining videos and short quizzes can all ensure you're more than ready for questions on the day of the exam.

AQA A-Level Chemistry: Redox Reactions - Chapter Summary

As you study for the AQA A-Level Chemistry test, it's good to know you're able to answer any question you face. This chapter makes it possible for you to confidently address redox reactions questions on the exam. By reviewing the lessons, you will have the knowledge to:

Share the meaning of redox (oxidation-reduction) reactions
Explain how to assign oxidation numbers to elements in a chemical formula
Describe the act of balancing redox reactions and identifying reducing and oxidizing agents
Discuss anode and cathode half-cell reactions

Make studying convenient by reviewing the lessons in any sequence you desire. Watch videos from your home computer, or access them on the go via your smartphone or tablet. Feel free to skip to key topics within the video lessons without watching them in full by utilizing handy timelines. Before, during or after reviewing each lesson, take a self-assessment quiz to gauge your comprehension of redox reactions.

4 Lessons in Chapter 9: AQA A-Level Chemistry: Redox Reactions

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1. Redox (Oxidation-Reduction) Reactions: Definitions and Examples

This short video will explain oxidation-reduction reactions, or redox reactions for short. The focus is on how electrons are transferred during redox reactions. Learn some neat mnemonic devices to help you remember when an atom is oxidizing or reducing.

2. Assigning Oxidation Numbers to Elements in a Chemical Formula

Learn the importance of oxidation in chemical reactions. Discover the rules for assigning oxidation numbers in both covalent compounds and ionic compounds. Learn how to assign the oxidation number for each element in a chemical formula.

3. Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents

Learn how to identify an oxidizing agent and a reducing agent and how the loss or gain of electrons applies to each one. Learn the relationship between an oxidized or reduced substance and the oxidizing or reducing agent associated with it. Discover what steps to take to balance a redox reaction.

4. Cathode and Anode Half-Cell Reactions

Learn how to write electrode half-reactions for cathodes and anodes. Discover how to calculate cell voltage potential when given a table of standard electrode potentials. Learn how to prevent corrosion using redox concepts and how to protect metal by cathodic protection.

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