Barron's AP Chemistry with Online Tests provides realistic practice exams and in-depth content review aligned with the current AP Chemistry curriculum. This edition includes: Three full-length practice exams in the book with all questions answered and explained Three online practice exams with all questions answered and explained Three diagnostic tests in the book to help students target areas where they need more study A comprehensive subject review covering the structure of matter, chemical bonding, states of matter, physical chemistry, chemical reactions, and all other test topics Study tips and test-taking strategies to help students apply the skills they learn in class