Zumdahl and De Coste’s best-selling INTRODUCTORY CHEMISTRY: A FOUNDATION, Ninth Edition, combines enhanced problem-solving structure with substantial pedagogy to enable students to become strong, independent problem solvers. Capturing student interest through early coverage of chemical reactions, accessible explanations and visualizations, and an emphasis on everyday applications, the authors explain chemical concepts starting with the basics and conclude by encouraging students to test their own understanding of the solution. Introductory Chemistry: A Foundation 9th Edition is written by Steven Zumdahl and published by Cengage Learning. ISBNs for Introductory Chemistry: A Foundation are 9781337671323, 1337671320 and the print ISBNs are 9781337677561, 1337677566. Additional ISBNs include 9781337399425, 9781337399623, 9780357539453, 9798214346830.