CH 221 Chapter Guides

Chapter Guide Six: Overview | Resources | Practice

  Overview of Chapter Guide Six

This module has two portions. The first portion (Chapter Six) introduces the concepts of empirical formulas as well as molarity. The second portion (Chapter 7 Part I) shows how to balance a chemical reaction and how chemists can often determine the products of a reaction based on patterns..

For a complete list of important concepts in Chapter 6, see the Chapter 6 Study Guide.

For a complete list of important concepts in Chapter 7 Part I, see the Chapter 7 Part I Study Guide.

  Resources for Chapter Guide Six

For this module, you should read Chapter 6 and Chapter 7 (sections 7.1 - 7.2 only) in the textbook.

The following screencasts and Complete Lectures might prove useful to you as you study this chapter.

The Chapter Six Lecture notes and Chapter Seven Part I Lecture notes which accompany this lesson will be helpful when going through this section. These are Web versions of the lecture notes used in the "normal" CH 221 class and should let you see what is important in this chapter. You can also view the Lecture Notes in presentation software for Chapter 6 (Keynote, PowerPoint) and Chapter 7 Part I (Keynote, PowerPoint).

A variety of handouts are available from Chapter 6 and Chapter 7 Part I. Feel free to explore all of them or just the ones which give you difficulty.

Once you have mastered the concepts listed above, check out the Chapter Six Concept Guide and the Chapter Seven Part I Concept Guide for a series of worked problems relating to this chapter. They will help you to ensure the mastery of the knowledge from this chapter.

Finally, test yourself (and get extra-credit in the bargain!) on the following chemistry concepts. If you get 9 out of 10 correct (or some multiple thereof), submit the information to receive extra credit.

  1. Percent Composition
  2. Empirical Formulas From Percent Composition
  3. Molarity, Moles and Volume
  4. Molarity, Mass and Volume
  5. Dilution
  6. Balancing Chemical Reactions
  7. Mixing Soluble Salts
  8. Oxidation Numbers
  9. Identifying Redox Components

  Practice the Concepts of Chapter Guide Six

Complete problem set #6 to further explore the molecule and compound concepts. Problem set #6 covers several questions from Chapter 6 and Chapter 7 Part I, and it can be found here. We will discuss problems like these during recitation, so come prepared to ask and answer questions.

For additional practice, try completing practice problem set #6 (with answers included at the end) and/or the non-assigned problems in Chapter 6 and Chapter 7 Part I in your textbook. Answers to many of those problems are listed in the back of your textbook.

If you need assistance on these problems, you have several options. You can visit the AVID / Learning Success Center located above the MHCC library on the Mt. Hood Community College campus; they have tutors available to help you with your chemistry homework. You can also contact me if you have any questions.

This sample Quiz #6 (with answers at the end) which was given during a previous year's CH 221 class will help you understand the kind of questions that will be asked on the quiz.

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