"We know that oxygen is necessary for life, but why do we need it? And what exactly is this element thats so important for us that we cant be without it? Readers explore the ins and outs of oxygen in this introduction to essential chemistry curriculum concepts. The detailed main text presents important facts about oxygen in a way that is easy for readers to understand, and diagrams, tables, and photographs are provided to help with the knowledge-building process. In addition, sidebars explore certain topics in greater detail, adding even more information to this handy reference resource"--.