Trusted, innovative, and calibrated, Chemistry: The Central Sciencehas helped millions of students understand and succeed in general chemistry. Its unrivaled problems, scientific accuracy, and clarity are maintained in this new edition, which is the book's biggest revision to date. In the Twelfth Edition,every word and piece of art has been studied for effectiveness. Based on feedback from students like you, this revision reflects the unparalleled expertise of its author team; each chapter has been updated and streamlined to remove any content not proven to increase student comprehension. Joined in this edition by new co-author Patrick Woodward, the book's solid authorship gains a fresh, new perspective yet maintains its unified, consistent voice. Chemistry: The Central Sciencecontinues to improve student success beyond the text with MasteringChemistry®, the most advanced online tutorial and assessment program available. Used by over a million science students, the Mastering platform is the most effective and widely used online tutorial, homework, and assessment system for the sciences. This is the product access code card for MasteringChemistry®and does not include the actual bound book. Pearson eTextgives students access to the text whenever and wherever they can access the Internet. The eText pages look exactly like the printed text, and include powerful interactive and customization functions. This is the access code card for Pearson eText and does not include the actual bound book.