Oxidation-Reduction Reactions Chemistry Worksheet Page 25
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Chapter Objectives
Chapter
The goal of this chapter is to teach you to do the following.
Objectives
1. Define all of the terms in the Chapter Glossary.
Section 6.1 An Introduction to Oxidation-Reduction Reactions
2. Describe the difference between the redox reactions that form binary ionic
compounds, such as zinc oxide, from their elements and the similar redox
reactions that form molecular compounds, such as nitrogen monoxide, from their
elements. (Your description should include the degree to which the electrons are
transferred in the reactions.)
Section 6.2 Oxidation Numbers
3. Given a formula for a substance, determine the oxidation number (or oxidation
state) for each atom in the formula.
4. Given an equation for a chemical reaction, identify whether the equation
represents a redox reaction or not.
5. Given an equation for a redox reaction, identify the substance that is oxidized
and the substance that is reduced.
6. Given an equation for a redox reaction, identify the substance that is the reducing
agent and the substance that is the oxidizing agent.
Section 6.3 Types of Reactions
7. Given an equation for a reaction, identify whether it represents a
combination reaction, a decomposition reaction, a combustion reaction, or a
single‑displacement reaction.
8. Given the formula for a substance that contains one or more of the elements
carbon, hydrogen, oxygen, and sulfur, write the balanced equation for the
complete combustion of the substance.
9. Describe the reaction that takes place between an uncharged metal, like zinc,
and a cation, like the copper(II) ion, in a water solution. Your description should
include the nature of the particles in the system before the reaction takes place,
the nature of the reaction itself, and the nature of the particles in the system
after the reaction. Your description should also include the equations for the
half‑reactions and the net ionic equation for the overall reaction.
Section 6.4 Voltaic Cells
10. Describe how a voltaic cell can be made using the redox reaction between a
metal, such as zinc, and an ionic substance containing a metallic ion, such as
the copper(II) ion. Your description should include a sketch that shows the key
components of the two half‑cells, labels to indicate which electrode is the cathode
and which is the anode, signs to indicate which electrode is negative and which
is positive, arrows to show the direction of movement of the electrons in the wire
between the electrodes, and arrows to show the direction of movement of the
ions in the system. (See Figure 6.5.)
11. Given a description of a voltaic cell, including the nature of the half‑reactions,
identify which electrode is the cathode and which is the anode.
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