vii UNIT 1: Introduction 2 Lesson 1: Gateways to Science 4 Lesson 2: Safety 6 UNIT 2: Matter and Energy 10 Lesson 1: Properties of Matter 12 Lesson 2: Atomic Structure 18 Lesson 3: Determining Subatomic Particles 29 Lesson 4: The Bohr Model and Valence Electrons 35 Lesson 5: The Periodic Table 41 Lesson 6: Periodic Table Families 50 Lesson 7: Compounds and Chemical Formulas 58 Lesson 8: Analyzing Chemical Formulas 64 Lesson 9: Chemical Changes in Compounds 70 Lesson 10: Chemical Equations 78 Lesson 11: Law of
Conservation of Mass 82 TABLE of Contents
Conservation of Mass 82 TABLE of Contents
