Richard Langley Author

Richard Langley holds a Ph.D. in inorganic chemistry from the University of Nebraska-Lincoln. He has taught chemistry at the university level for nearly 40 years. He is the author of 500 Physical Chemistry Questions and coauthor of 1,001 Practice Problems for Chemistry for Dummies, Chemistry for the Utterly Confused, Biochemistry for Dummies, 5 Steps to a 5 AP Chemistry, and Must Know High School Chemistry, among other works. He has been a grader for the AP Chemistry Exam for many years.

John Moore holds an Ed.D. from Texas A&M University with an emphasis in science education. He previously served as a professor of chemistry at Stephen F. Austin State University (SFA) for 46 years and is currently working for SFA's Science, Technology, Engineering and Mathematics Center. Dr. Moore is the author of Chemistry for Dummies, Chemistry Essentials for Dummies, and Chemistry II for Dummies. He is the coauthor of Chemistry for the Utterly Confused, Biochemistry for Dummies, 5 Steps to a 5 AP Chemistry, and Must Know High School Chemistry, among other works. John has been a grader for the AP Chemistry Exam for many years.