General Chemistry Review for Students

General Chemistry Review for Students - Compounds and Their...

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Compounds and Their Bonds A Review of General Chemistry
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The Periodic Table . . . Again
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Valence Matters Number of outermost electrons that an atom has available to lose, gain, or share. Valence electrons are the ones that take part in chemical changes, so they determine an atom's chemical behavior. Octet rule
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Valence Simplified
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Metals (Groups 1, 2, and 13) – Lose valence electrons – Become positively charged cations Non-metals (Groups 15, 16, and 17) – Gain valence electrons – Become negatively charged anions Ionic Compounds
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Ionic Compounds Groups 1, 2, and 13: + Groups 15, 16, and 17: -
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Ionic bond is formed by the attraction between oppositely charged ions. Ionic Compounds
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Covalent Compounds • Electrons are shared by atoms of nonmetals
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