While Dr. Chang passed away in 2014, his vision lives on through the stewardship of Jason Overby, an associate professor at the College of Charleston. The is a testament to this collaboration, preserving Chang’s signature conversational tone while integrating modern examples and data that reflect the current state of scientific research.
The 15th edition contains over 1,500 new or revised end-of-chapter problems. Problems are now explicitly categorized by difficulty (Easy, Moderate, Challenging) and type (Conceptual, Quantitative, Applied). Multi-concept problems (those requiring knowledge from two or three previous chapters) are clearly labeled, helping students build cumulative understanding. raymond chang chemistry 15th edition