ABSTRACT
Unless you are thirsty, in real need of refreshment, when you look upon that glass of water shown in Figure 1.1, you might ask-well, what could be more boring? The curious might wonder what physical and chemical properties of water make it so unique and necessary for living things. Again you might ask, when you look at that glass of water, taste, and smell it-well, what could be more boring? Pure water is virtually colorless and has no taste or smell. But the hidden qualities of water make it a most interesting subject.
