Principles of Chemistry: A Molecular Approach, Global Edition (4^th Ed.)

For two-semester courses in General Chemistry
Principles of Chemistry: A Molecular Approach presents core concepts without sacrificing rigor, enabling students to make connections between chemistry and their lives or future careers. Drawing upon his classroom experience as an award-winning educator, Professor Tro extends chemistry to the student's world by capturing student attention with examples of everyday processes and a captivating writing style. Throughout this student-friendly text, chemistry is presented visually through multi-level images that help students see the connections between the world around them (macroscopic), the atoms and molecules that compose the world (molecular), and the formulas they write down on paper (symbolic).
The 4th Edition pairs digital, pedagogical innovation with insights from learning design and educational research to create an active, integrated, and easy-to-use framework.

1. Matter, Measurement, and Problem Solving

2. Atoms and Elements

3. Molecules and Compounds

4. Chemical Reactions and Chemical Quantities

5. Introduction to Solutions and Aqueous Reactions

6. Gases

7. Thermochemistry

8. The Quantum-Mechanical Model of the Atom

9. Periodic Properties of the Elements

10.  Chemical Bonding I: The Lewis Model

11.  Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

12.  Liquids, Solids, and Intermolecular Forces

13.  Solids and Modern Materials

14.  Solutions

15.  Chemical Kinetics

16.  Chemical Equilibrium

17.  Acids and Bases

18.  Aqueous Ionic Equilibrium

19.  Free Energy and Thermodynamics

20.  Electrochemistry

21.  Radioactivity and Nuclear Chemistry

Appendix I Common Mathematical Operations in Chemistry Appendix II Useful Data

Appendix III Answers to Selected Exercises

Appendix IV Answers to In-Chapter Practice Problems

Actively engage students in learning chemistry

• Streamlined coverage of all the necessary topics required for a general chemistry course makes this presentation ideal for professors who want a book that only covers the topics they need. At only 21 chapters, this text has no separate nonmetals, metals or coordination compounds chapters.

Help students move from novice to expert problem-solvers

• New - Missed This? feature appears in the end-of-chapter Self Assessment Quizzes and each odd-numbered Problems by Topic exercise. Missed This? provides sections to read and videos to watch to help students remediate where necessary.
• Tro’s four-step “Sort, Strategize, Solve, and Check” problem-solving approach in the worked examples helps students connect the chemistry concepts to the problem and to its solution by developing an explicit conceptual plan for each problem. This method helps students understand where to start a problem and to think through the solution rather than simply formula hunting based on the given information.

Empower students to visualize and understand chemistry

• New Chapter 5 creates more topically-focused coverage—Chemical Reactions and Solutions have been divided into two separate chapters (now Chapters 4 and 5): one on chemical reactions (including stoichiometry), and another on solutions (including aqueous reactions). This new organization allows a sharper focus in each chapter and reduces the cognitive load for students.
• Multipart images include symbolic, macroscopic, and molecular perspectives that are fundamental to visualizing and understanding chemistry.
  • Extensively updated art program better directs students’ attention to key elements in the art and promotes understanding of the processes depicte