ALERT: Before you purchase, check with your instructor or review your course syllabus to ensure that you select the correct ISBN. Several versions of Pearson's MyLab & Mastering products exist for each title, including customized versions for individual schools, and registrations are not transferable. In addition, you may need a CourseID, provided by your instructor, to register for and use Pearson's MyLab & Mastering products. Packages Access codes for Pearson's MyLab & Mastering products may not be included when purchasing or renting from companies other than Pearson; check with the seller before completing your purchase. Used or rental books If you rent or purchase a used book with an access code, the access code may have been redeemed previously and you may have to purchase a new access code. Access codes Access codes that are purchased from sellers other than Pearson carry a higher risk of being either the wrong ISBN or a previously redeemed code. Check with the seller prior to purchase. -- To succeed in introductory chemistry, you need to develop your problem-solving skills—but you’ll also need to understand why these skills are important. Introductory Chemistry, Fourth Edition extends chemistry from the laboratory to your world, helping you learn chemistry by demonstrating how it is manifested in your daily life. Throughout, the Fourth Edition presents a new student-friendly, step-by-step problem-solving approach that adds four steps to worked examples (Sort, Strategize, Solve, and Check). This proven text continues to foster student success beyond the classroom with MasteringChemistry®, the most advanced online tutorial and assessment program available.