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