Bishop_Study_Guide_8 - 99 Chapter 8 Unit Conversions Review...

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99 Chapter 8 Unit Conversions Review Skills 8.1 Unit Analysis An Overview of the General Procedure Metric-Metric Unit Conversions English-Metric Unit Conversions 8.2 Rounding Off and Significant Figures Measurements, Calculations, and Uncertainty Rounding Off Answers Derived from Multiplication and Division Rounding Off Answers Derived from Addition and Subtraction 8.3 Density and Density Calculations Using Density as a Conversion Factor Determination of Mass Density 8.4 Percentage and Percentage Calculations 8.5 A Summary of the Unit Analysis Process 8.6 Temperature Conversions Chapter Glossary Internet: Glossary Quiz Chapter Objectives Review Questions Key Ideas Chapter Problems Section Goals and Introductions Be sure that you can do the things listed in the Review Skills section before you spend too much time studying this chapter. They are especially important. You might also want to look at Appendices A and B. Appendix A ( Measurement and Units ) provides tables that show units, their abbreviations, and relationships between units that lead to conversion factors. Appendix B ( Scientific Notation ) describes how to convert between regular decimal numbers and numbers expressed in scientific notation, and it shows how calculations using scientific notation are done.
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100 Study Guide for An Introduction to Chemistry Section 8.1 Unit Analysis Goals To describe a procedure for making unit conversions called unit analysis. To describe metric-metric unit conversions. To describe English-metric unit conversions. Many chemical calculations include the conversion from a value expressed in one unit to the equivalent value expressed in a different unit. Unit analysis, which is described in this section, provides you with an organized format for making these unit conversions and gives you a logical thought process that will help you to reason through such calculations. It is extremely important that you master this technique. You’ll be glad you have when you go on to Chapters 9 and 10, which describe chemical calculations that can be done using the unit analysis technique. Section 8.2 Rounding Off and Significant Figures Goal: To describe the procedures for rounding off answers to calculations. When you use a calculator to complete your calculations, it’s common that most of the numbers you see on the display at the end of the calculation are meaningless. This section describes why this is true and shows you simple techniques that you can use to round off your answers. Section 8.3 Density and Density Calculations Goal: To describe what density is, how it can be used as a conversion factor, and how density can be calculated. Density calculations are common in chemistry. The examples in this section show you how these calculations are done, and perhaps more important, these density calculations provide more examples of the unit analysis techniques and the procedures for rounding.
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This note was uploaded on 03/03/2012 for the course CHEM 100 taught by Professor Mark during the Fall '06 term at Monterey Peninsula College.

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Bishop_Study_Guide_8 - 99 Chapter 8 Unit Conversions Review...

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