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Lesson 1: Introduction to Oxidation & Reduction Reactions |
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The unit begins by introducing the concepts of oxidation and reduction. Through the use of oxidation numbers students learn to identify the substances undergoing oxidation and reduction in a redox reaction. Two methods are used to balance redox reactions - the oxidation number method and the half-reaction method. |
It is useful to begin the unit with some demonstrations of oxidation-reduction reactions. |
Practice 1 - Determining Oxidation Numbers Assignment 1 - Redox Reactions - Oxidation Numbers |
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Lesson 2: Electrochemistry - Electrochemical Cells |
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Lessons 2 and 3 examine the practical applications of electrochemistry from its two sides - electrochemical cells and electrolytic cell. Lesson 2 explores electrochemical cells. Key concepts of electrochemistry are discussed including standard electrode potentials and calculating cell voltages. Students gain practice in diagramming electrochemical cells, predicting cell voltage, and predicting both flow of electrons and flow of ions. A common thread throughout the Chemistry 30 course, the concept of reaction spontaneity and predicting the direction of chemical change, is again addressed. A discussion of batteries and techniques for minimizing corrosion finish this lesson. |
Practice 4 - Electrochemical Cells |
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Lesson 3: Electrochemistry - Electrolysis |
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| Lesson 3 addresses the flip side of electrochemistry - electrolysis and electrolytic cells. Students learn the difference between electrochemical cells and electrolytic cells. Three examples of electrolytic cells and processes are described - the electrolysis of a molten salt, the electrolysis of water, and electroplating. | Practice 5 - Predicting Reactions and Electrolytic Cells Assignment 3 - Electrochemistry |
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