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Ionic Bonds (the attraction between negative ions & positive ions)

Ionic Bonds (the attraction between negative ions & positive ions). *Opposites Attract*. Sodium transfers 1 valence electron to c hlorine. Chemical Formulas (a combination of symbols that show the ratio of elements in a compound). MgCl 2 ------> 1 magnesium, 2 chlorine

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Ionic Bonds (the attraction between negative ions & positive ions)

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  1. Ionic Bonds(the attraction between negative ions & positive ions) *Opposites Attract* Sodium transfers 1 valence electron to chlorine

  2. Chemical Formulas (a combination of symbols that show the ratio of elements in a compound) MgCl2------> 1 magnesium, 2 chlorine NaCl -------> 1 sodium, 1 chlorine CaCO3-------> __ Calcium, __ Carbon, __ Oxygen NH4NO3------> ? ? ? ? Subscripts- The #’s which tell how many elements are in compound *If compound has no subscript, it is understood to be a 1

  3. Naming Ionic Compounds 1. When naming ionic compounds the (+) ion comes first followed by the (-) ion. If the (-) ion is a single element, the end of name changes to –ide. Sodium chloride (NaCl) 3. If the (-) ion is polyatomic, the end of the name changes to –ate or -ite. Carbonate (CO32-)

  4. Review: Compound- A pure substance made of 2 or more elements Ex) NaCl Ionic compound- A substance made of (+) and (-) ionsEx) NaCl Polyatomic ion- Ion made of more than 1 atom Ex) CO32-

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