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Chemical Interactions 12

Nature of Science:Saving the Ozone Layer 12

Chapter 1 Chemical Reactions 16

1 Matter and Its Changes 18

2 Describing Chemical Reactions 28

3 Controlling Chemical Reactions 36

4 Integrating Health:Fire and Fire Safety 44

Chapter 2 Atoms and Bonding 52

1 Inside an Atom 54

2 Atoms in the Periodic Table 59

3 Ionic Bonds 63

4 Covalent Bonds 69

5 Integrating Earth Science:Crystal Chemistry 76

Chapter 3 Acids,Bases,and Solutions 82

1 Working With Solutions 84

2 Describing Acids and Bases 94

3 Acids and Bases in Solution 100

4 Integrating Life Science:Digestion and pH 108

Chapter 4 Exploring Materials 114

1 Polymers and Composites 116

2 Integrating Technology:Metals and Alloys 127

3 Ceramics and Glass 132

4 Radioactive Elements 137

Interdisciplinary Exploration:Bread on the Rise 148

Reference Section 154

Skills Handbook 154

Think Like a Scientist 154

Making Measurements 156

Conducting a Scientific Investigation 158

Thinking Critically 160

Organizing Information 162

Creating Data Tables and Graphs 164

Appendix A：Laboratory Safety 167

Appendix B：UsingaLaboratoryBalance 170

Appendix C：List ofChemical Elements 171

Appendix D：Periodic Table ofthe Elements 172

Glossary 174

Index 177

Acknowledgments 180

Inquiry Activities 17

CHAPTER PROJECT 17

opportunities for long-term inquiry 17

Chapter 1：Keep a Chemical Change Log 17

Chapter 2：Molecule Models 53

Chapter 3：Make Your Own Indicator 83

Chapter 4：Polymer Profiles 115

DISCOVER 18

Exploration and inquiry before readingWhat Happens When Chemicals React? 18

Do You Lose Anything? 28

Can You Speed Up or Slow Down a Reaction? 36

How Does Baking Soda Affect a Fire? 44

How Far Away Is the Electron? 54

What Are the Trends in the Periodic Table? 59

How Do Ions Form? 63

Why Don't Water and Oil Mix? 69

How Small Do They Get? 76

What Makes a Mixture a Solution? 84

What Colors Does Litmus Paper Turn? 94

What Can Cabbage Juice Tell You? 100

Where Does Digestion Begin? 108

What Did You Make? 116

Are They Steel the Same? 127

Does It Get Wet? 132

How Much Goes Away? 137

Sharpen your Skills 32

Practice of specific science inquiry skillsCalculating 32

Interpreting Data 40

Classifying 60

Interpreting Data 66

Designing Experiments 71

Graphing 89

Controlling Variables 90

Classifying 122

Predicting 139

Calculating 141

Reinforcement of key concepts 22

Mostly Cloudy 22

Still There 31

Crystal Clear 67

Does It Dissolve? 87

pHone Home 102

A Bright Idea 135

Skills Lab 26

In-depth practice of inquiry skills 26

Where's the Evidence? 26

Comparing Atom Sizes 62

Shedding Light on Chemical Bonds 74

Speedy Solutions 92

That's Half-Life! 144

Real-World Lab 42

Everyday application of science conceptsPeroxide,Catalase,andYou! 42

TheAntacidTest 106

Packaging With Polymers 124

Interdisciplinary Activities 56

Science and History 56

Models ofAtoms 56

The Development ofPolymers 120

Science and Soclety 48

Transporting Hazardous Chemicals 48

Grocery Bags:PaperorPlastic? 126

Connection 20

Math Toolbox 20

Social Studies 38

LanguageArts 72

LanguageArts 96

LanguageArts 119

Social Studies 142