This book will not appeal to traditionalists. Those willing to take a fresh look at the subject, however, will find this well-executed text an attractive alternative. Most undergraduate physical chemistry textbooks begin with thermodynamics, then proceed to quantum chemistry and finally to statistical thermodynamics and kinetics. This structure derives from the classic textbooks such as Physical Chemistry by Alberty and Silbey, which traces its origin to the Outline of Theoretical Chemistry written by Herbert Getman in 1913 when thermodynamics was the core of physical chemistry and quantum mechanics was in its infancy. Occasional authors have tried to deviate from this orthodoxy. I learned my undergraduate physical chemistry from the solid textbook written in 1964 by a University of Washington team: Eggers, Gregory, Halsey, and Rabinovitch. That text opens with quantum mechanics, as does the elegant and sophisticated book by Berry, Rice, and Ross. None of these books has been very successful, however, partly because they challenge tradition in a pedagogically conservative profession.

McQuarrie and Simon are the latest authors to write a book that recognizes that modern physical chemistry is based on quantum mechanics and that it makes pedagogical sense to begin with the atomic and molecular perspective and use it to build a firm understanding of macroscopic phenomena. The result is impressive. The first half of the book, 15 chapters and approximately 600 pages, develops a modern perspective on quantum mechanics and its applications including NMR, computational quantum chemistry, and lasers and laser spectroscopy. Chapter 1 is the customary historical introduction, which unfortunately repeats many of the errors of textbook histories. That quibble aside, the material is developed carefully and systematically, beginning with a consideration of classical waves. The prose is clean and serviceable (though not inspired), and the book is well illustrated with appropriate diagrams and graphs. I only wish the publisher had used heavier paper so the type on the reverse side of the page could not be seen.

All teachers of physical chemistry struggle with mathematics. Many students have either forgotten or never learned the necessary mathematical concepts and techniques. McQuarrie and Simon offer a solution in the form of ten "MathChapters" - brief, self-contained reviews of relevant mathematical topics, including problems. The MathChapters appear immediately before they are needed to develop the scientific topic. Both students and faculty should find these chapters helpful.

Following the extensive development of quantum chemistry is a nice chapter on the properties of gases. I was pleased to see discussions of both the Redlich­Kwong equation (the best two-parameter equation of state for real gases) and the relationship of the second virial coefficient to intermolecular forces. Thermodynamics is then developed from a molecular perspective beginning with the Boltzmann factor and partition functions. Much of this treatment clearly draws heavily on McQuarrie's excellent and popular textbook on statistical thermodynamics. In the subsequent exposition of classical thermodynamics the authors effectively use the molecular basis they have developed. This is a real strength of this book; students will develop a deep understanding of the power of statistical thermodynamics.

To keep the size of the book manageable, McQuarrie and Simon have eliminated several traditional applications of thermodynamics. There are no chapters on solution thermodynamics and activities, electrochemistry, or the phase rule.

The book continues with an exposition of chemical kinetics. A nice treatment of the kinetic theory of gases is followed by chapters on rate laws, reaction mechanisms, and gas-phase reaction dynamics. The final chapter is on solids and surface chemistry.

As in all physical chemistry textbooks, there is an extensive set of problems following each chapter. Most are standard "pencil-and-paper" problems, but others require the use of computer programs such as MathCad or Mathematica or a spreadsheet program. With almost universal access to powerful personal computers, students can explore complicated applications of the principles of physical chemistry.

This is a challenging book in several ways. Although it is clearly written, the level of sophistication is high so students will not find it easy. It is definitely a chemist's book, so students from fields such as chemical engineering or geology will find it less friendly than many of the standard texts. Because it challenges the traditional organization and coverage of the undergraduate physical chemistry course, many faculty will not give it serious consideration. That would be a mistake. McQuarrie and Simon have developed an excellent modern physical chemistry course that should inspire us to rethink our curriculum.