CHEM 1201 Chapter : Chemistry Chapter 1
Document Summary
1. 1 the study of chemistry: chemistry, is the study of properties of materials and changes that they undergo, can be applied to all aspects of life (e. g. , development of pharmaceuticals, leaf color change in fall, etc. We study chemistry because: it has a considerable impact on society (health care, food, clothing, conservation of natural resources, environmental issues, etc. 1. 2 classifications of matter: matter is classified by state (solid, liquid, or gas) or by composition (element, compound or mixture). Pure substances12: pure substances, are matter with distinct properties and fixed composition. , are elements (cannot be decomposed into simpler substances; i. e. only one kind of atom) or compounds (consist of two or more elements) Si units40,41,42: 1960: all scientific units use syst me international d"unit s (si units), there are seven base units, prefixes are used to indicate smaller and larger units obtained by decimal fractions or multiples of the base units.
