This is the book that defined the intro chemistry market 35 years ago! And it¡¦s been a market leader ever since! Hein/Arena is known for its accuracy, clear no-nonsense approach, and direct writing style. Strong problem solving and carefully constructed problem sets make this book a stand-out among its many imitators. New to This Edition: "h 10-12 new problems at the end of each chapter "h new set of challenge problems throughout "h Updated Chapter 13 (Water and Properties of Liquids) ¡P Updated Chapter 16 (Chemical Equilibrium) "h New Chemistry in Actions essays added to reflect current concerns