Trusted, innovative, and calibrated, Chemistry: The Central Science has 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 Science continues to improve student success beyond the text with MasteringChemistry(R), the most advanced online tutorial and assessment program available.