BIO SCI 93 Lecture Notes - Lecture 2: Valence Electron, Ionic Bonding, Chemical Polarity
11 Feb 2016
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BIO SCI 93 Full Course Notes
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Reading guide for lesson 2 (pages 28 to 30, 36 to 41, 45, 48 to 49, 51 to 54) Complete this reading guide as you read the textbook pages listed above. You might not have to read every word on every page, rather pay close attention to the questions in this guide and answer them as you work through the textbook. Also pay close attention to the terms that are underlined: these are key terms that you should know the definitions of and be able to apply in new situations. An element is a substance that can"t be broken down to other substances by chemical reactions but a compound is something that can. A compound is two or more different elements combined in a fixed ratio. Examine figure 2. 4 for a model of a helium atom. Neutrons ad protons form the nucleus of an atom and electrons form the outer shell.
