Aspiring engineers need a text that prepares them to use thermodynamics in professional practice. Instructors need a concise textbook written for a one-semester undergraduate course - a text that foregoes clutter and unnecessary details but furnishes the essential facts and methods. This book continues to fill both those needs. The second edition includes a new chapter on thermodynamic property relations and gives updated, expanded problem sets in every chapter. Accessible, practical, and cohesive, the text builds a solid foundation for advanced engineering studies and practice. It exposes students to the "big picture" of thermodynamics, and its streamlined presentation allows glimpses into important concepts and methods rarely offered by texts at this level.