This comprehensive lab companion provides enough theory to help readers understand how and why an operation works, but emphasizes the practical aspects of an operation to help them perform the operation successfully in the lab.Makes substantive revisions of many operations to clarify existing material and add new information. Emphasizes environmentally friendly (i.e. "green") lab experiments. Adds a new section on Chemistry and the Environment.A useful guide for chemists and other professionals who do laboratory work in the scientific fields.