Peter Atkins is a fellow of Lincoln College in the University of Oxford and the author of more than sixty books for students and a general audience. His texts are market leaders around the globe. A frequent lecturer in the United States and throughout the world, he has held visiting professorships in France, Israel, Japan, China, and New Zealand. He was the founding chairman of the Committee on Chemistry Education of the International Union of Pure and Applied Chemistry and was a member of IUPAC's Physical and Biophysical Chemistry Division. Peter was the 2016 recipient of the American Chemical Society's Grady-Stack Award for science journalism.

Julio de Paula is Professor of Chemistry and Dean of the College of Arts & Sciences at Lewis & Clark College. A native of Brazil, Professor de Paula received a B.A. degree in chemistry from Rutgers, The State University of New Jersey, and a Ph.D. in biophysical chemistry from Yale University. His research activities encompass the areas of molecular spectroscopy, biophysical chemistry, and nanoscience. He has taught courses in general chemistry, physical chemistry, biophysical chemistry, instrumental analysis, and writing.

• Focus 1: The properties of gases


• Focus 2: The First Law of thermodynamics


• Focus 3: The Second Law of thermodynamics


• Focus 4: Physical transformations


• Focus 5: Chemical Change


• Focus 6: Chemical kinetics


• Focus 7: Quantum theory


• Focus 8: Atomic structure


• Focus 9: The chemical bond


• Focus 10: Molecular interactions


• Focus 11: Molecular spectroscopy


• Focus 12: Statistical thermodynamics


• Focus 13: Magnetic resonance


• Focus 14: Macromolecules and aggregates


• Focus 15: Solids