CHEM 1110 Chapter Notes - Chapter 1: Kilogram, Dimensional Analysis, Standard Deviation
12 Sep 2016
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Document Summary
Chemistry: the study of matter and the changes matter undergoes. Matter: physical material of the universe aka anything that has mass and occupies space. Property: any characteristic that allows us to recognize a particular type of matter and to distinguish it from other types. Composition the kind of atoms matter contains. Molecules: when two or more atoms are joined in specific shapes. Submicroscopic: unable to be seen by naked eye. Pure substance: (substance) has distinct properties and its composition does vary from sample to sample. Elements a substance that can not be broken down into smaller substance. Compounds a substance that is composed of two or more elements. Mixture a combination of two or more substances in which each substance retains its chemical identity. Heterogeneous: mixtures that vary in texture and appearance in any sample. Law of constant composition (law of definite proportions): the idea that the elemental composition of a compound is always the same.
