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Ch 13: Praxis General Science: Oxidation Reduction

About This Chapter

This chapter can help you prepare for oxidation reduction questions on the Praxis General Science assessment. Explore engaging video lessons and take self-assessment quizzes to determine your readiness to take the test.

Praxis General Science: Oxidation Reduction - Chapter Summary

Studying for the Praxis General Science assessment could mean revisiting concepts you haven't explored in months or years. Get caught up on oxidation reduction by reviewing lessons that can enable you to:

  • Define and share a basic understanding of reduction in chemistry
  • Assign oxidation numbers to elements in a chemical formula
  • Provide the meaning of redox reactions
  • Balance redox reactions and identify oxidizing and reducing agents
  • Predict products of single displacement reactions
  • Describe electrochemical cells, electrochemistry and cathode and anode half-cell reactions
  • Write and balance combustion reactions

You can review the lessons in their video format, or access full transcripts with helpful vocabulary words. Mobile features allow you to explore the lessons from your laptop, smartphone or tablet.

Praxis General Science: Oxidation Reduction Chapter Objectives

The purpose of the Praxis General Science test is to gauge your comprehension of the subject and ensure you're prepared teach it to students in your state. Earning a passing score, which varies from state to state, helps you secure appropriate licensure. The test consists of approximately 135 multiple-choice questions, is taken on computer and lasts 2.5 hours.

Topics in this oxidation reduction chapter are covered in the physical science content category of the test, which consists of 51 questions and constitutes about 38% of the total test. Simplify the process of studying for this section of the test by thoroughly exploring the lessons in this chapter then testing your knowledge with short quizzes. A chapter exam is also available to reinforce concepts learned in all the lessons.

8 Lessons in Chapter 13: Praxis General Science: Oxidation Reduction
Test your knowledge with a 30-question chapter practice test
Reduction in Chemistry: Definition & Overview

1. Reduction in Chemistry: Definition & Overview

When atoms are greedy for electrons, they steal them from other atoms. This reduces their charge. You can see the effects of reduction in the world around you. Learn more about reduction in chemistry and see some examples of it.

Assigning Oxidation Numbers to Elements in a Chemical Formula

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.

Redox (Oxidation-Reduction) Reactions: Definitions and Examples

3. 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.

Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents

4. 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.

The Activity Series: Predicting Products of Single Displacement Reactions

5. The Activity Series: Predicting Products of Single Displacement Reactions

Discover what a single replacement reaction is and how to identify it. Learn what chemical activity is, how that applies to an activity series table and how to predict the product of a single replacement reaction by referring to the activity series.

Electrochemical Cells and Electrochemistry

6. Electrochemical Cells and Electrochemistry

Learn to identify the parts of and be able to describe an electrochemical cell, including the electrolyte, electrodes, anodes, and cathodes. Learn how to make a homemade lemon battery and how to diagram an electrochemical cell that will light a light bulb.

Cathode and Anode Half-Cell Reactions

7. 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.

Writing and Balancing Combustion Reactions

8. Writing and Balancing Combustion Reactions

Discover what a combustion reaction is as well as what reactants are needed and what products are produced. Learn to write and balance a combustion reaction. Through the concepts of bond energies, learn how to explain why combustion reactions are largely exothermic.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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