Chemistry deals with the properties of materials and the changes these materials undergo. (DLB, 7th Ed., Prentice-Hall)
Chemistry is a physical science that deals with the composition, structure and properties of substances and the reactions they undergo. As a science, chemistry involves the intuitive and creative application of knowledge gained from experiment observation and theoretical descriptions.
Anything that bites or scratches is biology
Anything that stinks or pops is chemistry
Anything that does not work is physics
Definition of Matter
The two distinguishing characteristics of matter is that matter is classified as anything that has mass and occupies space.