Do you fear mole conversions and Avogadro's number? Are oxidation-reduction reactions just too much to handle? Are the Ideal Gas Laws getting you down? When your teacher tries to teach you how to name organic compounds, is he or she speaking a language you never learned? Homework Helpers: Chemistry is a user-friendly review book that will make every student-or parent trying to help their child-feel like he or she has a private Chemistry tutor. Concepts are explained in clear, easy-to-understand language, and problems are worked out with step-by-step methods that are easy to follow. Each lesson comes with numerous review questions and answer keynotes that explain each correct answer and why it's correct. The Homework Helpers Series is just what students need to boost their confidence and give them the help they need to ace even the most challenging classes. Contents......Page 8 Preface......Page 12 Lesson 1–1: Classification of Matter......Page 14 Lesson 1–2: Phases of Matter......Page 20 Lesson 1–3: Chemical and Physical Properties......Page 24 Lesson 1–4: Chemical and Physical Changes......Page 27 Lesson 1–5: Energy and Chemical Reactions......Page 30 Lesson 2–1: The International System of Measurements (SI)......Page 42 Lesson 2–2: Measuring Matter......Page 46 Lesson 2–3: Uncertainty in Measurements......Page 50 Lesson 2–4: Calculating With Significant Digits......Page 53 Lesson 2–5: The Factor-Label Method......Page 58 Lesson 2–6: Density Calculations......Page 63 Lesson 3–1: Modern Atomic Theory and Model......Page 74 Lesson 3–2: Elemental Symbols......Page 78 Lesson 3–3: Quantum Numbers......Page 83 Lesson 3–4: Electron Configuration......Page 86 Lesson 3–5: Orbital Notation......Page 95 Lesson 3–6: Lewis Dot Notation......Page 98 Lesson 3–7: The Periodic Table of Elements......Page 101 Lesson 4–1: Types of Bonds......Page 116 Lesson 4–2: Ionic vs. Molecular Compounds......Page 120 Lesson 4–3: Lewis Dot Diagrams for Compounds......Page 123 Lesson 4–4: Structural Formulas......Page 128 Lesson 4–5: Geometry of Molecules......Page 135 Lesson 4–6: Polarity of Molecules......Page 139 Lesson 5–1: Oxidation Numbers......Page 150 Lesson 5–2: Writing Chemical Formulas......Page 153 Lesson 5–3: Naming Compounds......Page 158 Lesson 5–4: Molecular and Empirical Formulas......Page 162 Lesson 5–5: Molecular and Formula Mass......Page 165 Lesson 5–6: Using Coefficients With Formulas......Page 168 Lesson 6–1: Balancing Chemical Equations......Page 182 Lesson 6–2: Classifying Chemical Reactions......Page 189 Lesson 6–3: Ionic Equations......Page 192 Lesson 6–4: Oxidation and Reduction Reactions......Page 199 Lesson 6–5: Nuclear Reactions......Page 204 Lesson 7–1: The Mole......Page 216 Lesson 7–2: Molar Conversions......Page 221 Lesson 7–3: Mole-Mole Problems......Page 229 Lesson 7–4: Mass-Mass Problems......Page 232 Lesson 7–5: Mixed Mass-Volume Problems......Page 239 Lesson 7–6: Volume-Volume Problems......Page 243 Lesson 8–1: Measuring Gas Pressure......Page 260 Lesson 8–2: Boyle’s Law......Page 263 Lesson 8–3: Charles’s Law......Page 266 Lesson 8–4: Dalton’s Law......Page 270 Lesson 8–5: Combined Gas Law......Page 274 Lesson 8–6: Graham’s Law......Page 277 Lesson 8–7: Ideal Gas Law......Page 280 Lesson 9–1: Solutions......Page 296 Lesson 9–2: Properties of Acids and Bases......Page 304 Lesson 9–3: Naming Acids......Page 312 Lesson 9–4: Theories of Acids and Bases......Page 314 Lesson 9–5: Strengths of Acids and Bases......Page 321 Lesson 9–6: Acid-Base Titrations......Page 324 B......Page 336 D......Page 337 F......Page 338 L......Page 339 N......Page 340 P......Page 341 T......Page 342 W......Page 343 B......Page 344 D......Page 345 G......Page 346 L......Page 347 N......Page 348 Q......Page 349 S......Page 350 W......Page 351 About the Author......Page 352 Career Press Contents 8 Preface 12 Chapter 1— An Introduction to Chemistry: The Science of Chemistry 14 Lesson 1–1: Classification of Matter 14 Lesson 1–2: Phases of Matter 20 Lesson 1–3: Chemical and Physical Properties 24 Lesson 1–4: Chemical and Physical Changes 27 Lesson 1–5: Energy and Chemical Reactions 30 Chapter 2—Measurements and Calculations 42 Lesson 2–1: The International System of Measurements (SI) 42 Lesson 2–2: Measuring Matter 46 Lesson 2–3: Uncertainty in Measurements 50 Lesson 2–4: Calculating With Significant Digits 53 Lesson 2–5: The Factor-Label Method 58 Lesson 2–6: Density Calculations 63 Chapter 3—Atomic Structure 74 Lesson 3–1: Modern Atomic Theory and Model 74 Lesson 3–2: Elemental Symbols 78 Lesson 3–3: Quantum Numbers 83 Lesson 3–4: Electron Configuration 86 Lesson 3–5: Orbital Notation 95 Lesson 3–6: Lewis Dot Notation 98 Lesson 3–7: The Periodic Table of Elements 101 Chapter 4—Bonding and Molecular Structure 116 Lesson 4–1: Types of Bonds 116 Lesson 4–2: Ionic vs. Molecular Compounds 120 Lesson 4–3: Lewis Dot Diagrams for Compounds 123 Lesson 4–4: Structural Formulas 128 Lesson 4–5: Geometry of Molecules 135 Lesson 4–6: Polarity of Molecules 139 Chapter 5—Chemical Formulas 150 Lesson 5–1: Oxidation Numbers 150 Lesson 5–2: Writing Chemical Formulas 153 Lesson 5–3: Naming Compounds 158 Lesson 5–4: Molecular and Empirical Formulas 162 Lesson 5–5: Molecular and Formula Mass 165 Lesson 5–6: Using Coefficients With Formulas 168 Chapter 6—Chemical and Nuclear Reactions 182 Lesson 6–1: Balancing Chemical Equations 182 Lesson 6–2: Classifying Chemical Reactions 189 Lesson 6–3: Ionic Equations 192 Lesson 6–4: Oxidation and Reduction Reactions 199 Lesson 6–5: Nuclear Reactions 204 Chapter 7—Stoichiometry 216 Lesson 7–1: The Mole 216 Lesson 7–2: Molar Conversions 221 Lesson 7–3: Mole-Mole Problems 229 Lesson 7–4: Mass-Mass Problems 232 Lesson 7–5: Mixed Mass-Volume Problems 239 Lesson 7–6: Volume-Volume Problems 243 Chapter 8—Gases 260 Lesson 8–1: Measuring Gas Pressure 260 Lesson 8–2: Boyle’s Law 263 Lesson 8–3: Charles’s Law 266 Lesson 8–4: Dalton’s Law 270 Lesson 8–5: Combined Gas Law 274 Lesson 8–6: Graham’s Law 277 Lesson 8–7: Ideal Gas Law 280 Chapter 9—Solutions, Acids, and Bases 296 Lesson 9–1: Solutions 296 Lesson 9–2: Properties of Acids and Bases 304 Lesson 9–3: Naming Acids 312 Lesson 9–4: Theories of Acids and Bases 314 Lesson 9–5: Strengths of Acids and Bases 321 Lesson 9–6: Acid-Base Titrations 324 Glossary 336 A 336 B 336 C 337 D 337 E 338 F 338 G 339 H 339 I 339 K 339 L 339 M 340 N 340 O 341 P 341 R 342 S 342 T 342 U 343 V 343 W 343 Index 344 A 344 B 344 C 345 D 345 E 346 F 346 G 346 H 347 I 347 K 347 L 347 M 348 N 348 O 349 P 349 Q 349 R 350 S 350 T 351 U 351 V 351 W 351 About the Author 352 1564147215,9781564147219 Contains over fifty lessons that provide explanations of topics typically covered in a one-year high school chemistry curriculum, each with examples, formulas, charts, and review questions. "When a person is confronted with a large number of objects or ideas, it is only natural to want to classify and organize them into groups."