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TEST REVIEW!!!! • Write the empirical formula for the following compounds. • 1) C6H6 • 2) C8H18 • 3) WO2 • Nitrogen and oxygen form an extensive series of oxides with the general formula NxOy. One of them is a blue solid that comes apart, reversibly, in the gas phase. It contains 36.84% N. What is the empirical formula of this oxide? • Rubbing alcohol was found to contain 60.0 % carbon, 13.4 % hydrogen, and the remaining mass was due to oxygen. What is the empirical formula of rubbing alcohol? A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole. What is the molecular formula of this compound? A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole. What is the molecular formula of this compound? Name and label each as ionic or covalent • • • • • Al2(SO4)3 KNO3 FeCO3 Pb3(PO4)2 P2 O 5 Determine the formula for and label each as ionic or covalent • • • • • Copper(II) Hydroxide Copper(II) Carbonate Chromium(III) Acetate Calcium Chlorate Ammonium Oxide Define electronegativity Which group on the Periodic Table are my least electronegative elements found in? Cations in a sea of electrons best describes what type of bonding??? Determine if the following compound is ionic or covalent, and show either transfer of electrons (using arrows) or sharing of electrons (venn diagram). • NaCl Determine if the following compound is ionic or covalent, and show either transfer of electrons (using arrows) or sharing of electrons (venn diagram). • H2O Lewis Dot Diagrams and Structural Formulas - Single Bonds Molecular Substance Molecular Formula Chloroform CHCl3(l) Ammonia NH3 Lewis Diagram of Lewis Diagram Atoms Involved of Molecule Water Bromine Methanol CH3OH HCl(aq) Cl2(g) C2H6(g) Ethane Ethyne C2H2 (I atoms) (C & H atoms) (N & I atoms) (O & F atoms) (P & Cl aotms) Lewis Dot Diagrams and Structural Formulas – Multiple Bonds Formaldehyde HCHO(l) Ethyne (Acetylene) C2H2(g) Nitrogen Carbon Dioxide Structural Formula Lewis Dot Diagrams and Structural Formulas - Single Bonds Molecular Substance Molecular Formula Chloroform CHCl3(l) Ammonia NH3 Lewis Diagram of Lewis Diagram Atoms Involved of Molecule Water Bromine Methanol CH3OH HCl(aq) Cl2(g) C2H6(g) Ethane Ethyne C2H2 (I atoms) (C & H atoms) (N & I atoms) (O & F atoms) (P & Cl aotms) Lewis Dot Diagrams and Structural Formulas – Multiple Bonds Formaldehyde HCHO(l) Ethyne (Acetylene) C2H2(g) Nitrogen Structural Formula Lewis Dot Diagrams and Structural Formulas - Single Bonds Molecular Substance Molecular Formula Chloroform CHCl3(l) Ammonia NH3 Lewis Diagram of Lewis Diagram Atoms Involved of Molecule Water Bromine Methanol CH3OH HCl(aq) Cl2(g) C2H6(g) Ethane Ethyne C2H2 Lewis Dot Diagrams and Structural Formulas – Multiple Bonds Formaldehyde HCHO(l) Ethyne (Acetylene) C2H2(g) Nitrogen Carbon Dioxide HCN(g) Tetrafluroethene C2H4(g) Dichloroethyne C2Cl2(g) Structural Formula Lewis Dot Diagrams and Structural Formulas - Single Bonds Molecular Substance Molecular Formula Chloroform CHCl3(l) Ammonia NH3 Lewis Diagram of Lewis Diagram Atoms Involved of Molecule Water Bromine Methanol CH3OH HCl(aq) Cl2(g) C2H6(g) Ethane Ethyne C2H2 Formaldehyde HCHO(l) Ethyne (Acetylene) C2H2(g) Lewis Dot Diagrams and Structural Formulas – Multiple Bonds Nitrogen Carbon Dioxide HCN(g) Tetrafluroethene C2H4(g) Dichloroethyne C2Cl2(g) Structural Formula Compound NI3 CF4 OCl2 C2F2 HOF NHF2 C2IBr C2HF3 CHClBr2 H2O2 CO2 CH3OH C3H6 (noncyclic) For Each Lewis Dot Central Atom # Diagram # bonding lone pairs pairs Shape Structural Formula Polar molecule? Yes/no Compound NI3 CF4 OCl2 C2F2 HOF NHF2 C2IBr C2HF3 CHClBr2 H2O2 CO2 CH3OH C3H6 (noncyclic) Lewis Dot Diagram For Each Central Atom # # lone bondin pairs g pairs Shape Structural Formula Polar molecule yes/no Compound NI3 CF4 OCl2 C2F2 HOF NHF2 C2IBr C2HF3 CHClBr2 H2O2 CO2 CH3OH C3H6 (noncyclic) Lewis Dot Diagram For Each Central Atom # # lone bondin pairs g pairs Shape Structural Formula Polar molecule yes/no Compound NI3 CF4 OCl2 C2F2 HOF NHF2 C2IBr C2HF3 CHClBr2 H2O2 CO2 CH3OH C3H6 (noncyclic) Lewis Dot Diagram For Each Central Atom # # lone bondin pairs g pairs Polar molecule? Shape Structural Yes/no Formula Topics Covered • • • • • • Ionic and Covalent Naming Empirical and molecular formulas Electronegativity and polarity Ionic, covalent and metallic bonding Lewis Diagrams and Structures without VSEPR Lewis Diagrams and VSEPR