The author presents this volume I of chemistry the practical science as a teaching guide for instructors and students. This book gives first time students of chemistry a useful and compelling introduction to chemistry. To this end, this text book retains qualities that will be familiar to long time users. The overall goal of this text book is to produce a book that introduces the students to the relevance and excitement of chemistry. This text book addresses the increasing close relationship among various disciplines and shows the relevance of chemistry to contemporary issues in a pedagogically approachable manner. This text book provides a format that allows the instructor to tailor the emphasis to the needs of the class. Step-by-step instructions and plenty of examples are given. This text book, in addition to chemistry majors, discusses exciting and relevant aspects of biological, environmental, and materials science in order to accommodate the needs of first-year chemistry students aspiring for biologically and medically relevant topics.