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Chemistry Chapter 1 Notes

Chemistry Chapter 1 Notes - Chemistry Chapter 1 Notes...

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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. 
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