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Unformatted text preview: Chemistry Chapter 1 Notes 22/08/2007 12:59:00 1.1 Chemistry: A Science for the Twenty-First Century Chemistry is the study of matter and the changes it undergoes. Chemistry has made an impact in areas such as health and medicine, energy and the environment, materials and technology, and food and agriculture. 1.2 The Study of Chemistry 1.3 The Scientific Method Scientific Method is the systematic approach to research. Data maybe qualitative, consisting of general observations about the system, or quantitative, comprising numbers obtained by various measurements of the system. A law in science is a concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions. A theory in science is a unifying principle that explains a body of facts and/or those laws that are based on them. 1.4 Classifications of Matter Matter is anything that occupies space and has mass. Substance and Mixtures A substance is a form of matter that has a definite (constant) composition and distinct properties. A mixture is a combination of two or more substances in which the substances retain their distinct identities. Mixtures are either homogeneous or heterogeneous. A homogeneous mixture is when the composition of the mixture is the same throughout. A heterogeneous mixture is when the composition of the mixture is not uniform. mixture is when the composition of the mixture is not uniform....
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This note was uploaded on 04/17/2008 for the course CHEMISTRY 112 taught by Professor Donato during the Spring '08 term at CofC.
- Spring '08