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Unit Test: Naming and writing formulas
What to study: Review all Bellwork questions. Read chapter 7 section 1, 2, and 3. Read chapter 8 section 1 and 2 Review all key vocabulary and notes. Practice worksheets. Unit Test: 45 multiple choice questions.(135 pts ) Bring a #2 pencil.
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Review Chapter 7 and 8 Naming and writing ionic Compounds
Naming and writing Transition Metals Lewis Dot Structure Naming Binary Molecular Molecules Naming and writing acids
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Naming Binary compounds
Al + O Are they equal ? ⁺3 ⁻2 Would they cancel each other out? Al Al O O O ⁺3 ⁺3 ⁻2 ⁻2 ⁻2 Al₂O₃ Aluminum Oxide
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Binary Compounds(contain polyatomic ions)
NH₄⁺ O²⁻ Ammonium and Oxygen NH₄⁺ + NH₄⁺ O²⁻ (NH₄)₂O Ammonium Oxide
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Contain Transition Metals
Fe³⁺ and O²⁻ Fe³⁺ Fe³⁺ and O²⁻ O²⁻ O²⁻ form Fe₂O₃ iron(III)oxide
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Lewis Dot Structure: How many valence electrons?
Example: CH₄ Molecule H∙ H∙ H∙ H∙ 4H∙ +
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Bonds
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Naming Molecules Prefixes: 1 mono 6 hexa 2 di 7 hepta 3 tri 8 octa
4 tetra nona 5 penta deca
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Naming Molecules Practice: P₂O₅ Solve P=Phosphorus 2 O=Oxygen 5
Answer: diphosphorus pentaoxide
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Naming acids Example: HCl hydrogen hydro Chlorine Chloric
Answer: Hydrochloric acid Hydro chloric acid H Cl (second word is always acid)
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Naming Oxyacids Oxyacids contain hydrogen and oxyanions.
Oxyanions are polyatomic ion that has a oxygen. EX: HNO₃ If it ends in ate ic If it ends ite ous No₃ nitrate (look at table 7.9) ate ic Change nitrate to nitric. Second word is always acid. EX: HNO₃ Answer: nitric acid
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Phosphoric acid Phosphate PO4 3⁻ H⁺ H⁺ H⁺ H3PO4
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Key vocabulary for unit test
Chemical bond Cation Anion Ionic bond Ionic compound Binary Compounds Transition Metals Lewis Dot Structure Molecules compounds
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Monoatomic ion Formula unit Oxidation number Polyatomic ion Oxyanion Covalent bond Oxyacids Binary acids Octet Rule Valence electrons
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Single covalent bond Double covalent bond Triple covalent bond
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Practice: Name the following chemical compounds: 1) NaBr
2) Ca(C2H3O2)2 3) P2O5 4) Ti(SO4)2 5) FePO4 6) K3N 7) SO2 8) CuOH 9) Zn(NO2)2 10) V2S3
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Practice: Write The Formula
Write the formulas for the following chemical compounds: 11) silicon dioxide 12) nickel (III) sulfide 13) manganese (II) phosphate 14) silver acetate 15) diboron tetrabromide 16) magnesium sulfate heptahydrate 17) potassium carbonate 18) ammonium oxide 19) tin (IV) selenide
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