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Chemical Formula and Naming

Chemical Formula and Naming. Write formulas and names for polyatomic compounds . Additional KEY Terms. Octet rule: atoms react to get a full outer shell. Ionic Compound: Ions are atoms that have reacted to gain or lose electrons Lose e - – positive ion OR cation . ( metals )

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Chemical Formula and Naming

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  1. Chemical Formula and Naming

  2. Write formulas and names for polyatomic compounds. • Additional KEY Terms

  3. Octet rule: atomsreact to get a full outer shell • Ionic Compound: • Ionsare atoms that have reacted to gainorloseelectrons • Lose e-– positive ion OR cation. (metals) • Gain e-– negative ion OR anion. (nonmetals) • Bonding of two oppositelycharged IONS.

  4. Iron (II) chloride calcium chloride + 2 - + 2 - 1 1 Fe Cl Ca Cl FeCl2 CaCl2

  5. +4 -2 + - 1 Pb O PbO 2 lead oxide (IV)

  6. Covalent Compound: • Contain two or more NON-METAL atoms. • Moleculeis smallest unit of covalent compound. • Formed by SHARING valence electrons: • Equally shared electrons – non-polar covalent • Unequally shared electrons – polar covalent

  7. N O 2 4 nitrogen oxide di tetra dinitrogen tetroxide di phosphorus oxide penta PO 2 5

  8. Polyatomic Ions(poly = many) Groups of covalently bonded atoms that act as ions. Polyatomic ions function as one unit with one charge – lose or gain electrons. NEVER change the subscripts of polyatomic ions. Al(C2H3O2)3

  9. Write the name of the ionic compound: + - 1 Al C2H3O2 Al(C2H3O2) 3 aluminum acetate

  10. Ni(NO3)2 • magnesium sulfate • KMnO4 • iron (III) hydroxide • Ca(C2H3O2)2 • silver chromate • PbCO3 • tin (IV) sulfate • Na2HPO4 • ammonium nitrite nickel (II) nitrate MgSO4 potassium permanganate Fe(OH)3 calcium acetate Ag2CrO4 lead (II) carbonate Sn(SO4)2 sodium hydrogen phosphate NH4NO2

  11. CAN YOU / HAVE YOU? • Writeformulas and names for polyatomic compounds. • Additional KEY Terms

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