Textbook in PDF format Introduction to Chemistry takes a conceptual approach to introductory chemistry. Chapters open with a scenario involving real-life students to connect abstract chemical concepts to students' lives. Math is introduced on a need-to-know basis. This conceptual approach first teaches the chemistry and then shows students how to use the math with the chemistry. We recognize how important it is for students to apply chemistry to their world, so applications - especially medical- and environment-related applications – are provided throughout the text, marginal notes, worked examples, and end-of-chapter problems