Lecture 6

Lecture 6 - NamingChemicalCompounds Naming Binary Ionic...

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Naming Chemical Compounds Naming Binary Ionic Compounds: Identify the positive ion and then the negative ion. The positive ion uses its elemental name. The negative ion substitutes the second half of its elemental name with –ide . Do not use Greek prefixes such as mono– , di– , or tri– .
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Naming Ionic Compounds More polyatomic ions:  Tables 2.5 and  2.7  The charge and chemical formula for 
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Naming Binary Molecular Compounds The more  cationlike  ( more metallic element uses its elemental name.    The more  anionlike  ( less metallic )element  substitutes the second half of its elemental  name with  –ide .   Use the Greek prefixes to express the  number of each element present.
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Naming Covalent Compounds Greek prefixes for  the first ten  numbers. Only for covalent  compounds
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Examples Give systematic names for the following  compounds NCl 3 Nitrogen trichloride S 2 F 2 Disulfur difluoride CO Carbon monoxide
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More Examples Write formulas for compounds with the  following names Phosphorus dioxide PO 2 Disulfur trioxide S 2 Cl 3
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LAW of CONSERVATION OF MATTER AND MASS: In a chemical reaction matter and mass are conserved (Lavoisier) Number of Atoms in Reactants = Number of Atoms in Products Atoms only rearranged during chemical reaction Atoms are neither created nor destroyed Mass of Reactants = Mass of Products
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Lecture 6 - NamingChemicalCompounds Naming Binary Ionic...

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