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Unit Test: Naming and writing formulas

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1 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.

2 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

3 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

4 Binary Compounds(contain polyatomic ions)
NH₄⁺ O²⁻  Ammonium and Oxygen NH₄⁺ + NH₄⁺ O²⁻ (NH₄)₂O Ammonium Oxide

5 Contain Transition Metals
Fe³⁺ and O²⁻ Fe³⁺ Fe³⁺ and O²⁻ O²⁻ O²⁻ form Fe₂O₃ iron(III)oxide

6 Lewis Dot Structure: How many valence electrons?
Example: CH₄ Molecule H∙ H∙ H∙ H∙ 4H∙ +

7 Bonds

8 Naming Molecules Prefixes: 1 mono 6 hexa 2 di 7 hepta 3 tri 8 octa
4 tetra nona 5 penta deca

9 Naming Molecules Practice: P₂O₅ Solve P=Phosphorus 2 O=Oxygen 5
Answer: diphosphorus pentaoxide

10 Naming acids Example: HCl hydrogen hydro Chlorine  Chloric
Answer: Hydrochloric acid Hydro chloric acid H Cl (second word is always acid)

11 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

12 Phosphoric acid Phosphate PO4 3⁻ H⁺ H⁺ H⁺ H3PO4

13 Key vocabulary for unit test
Chemical bond Cation Anion Ionic bond Ionic compound Binary Compounds Transition Metals Lewis Dot Structure Molecules compounds

14 Monoatomic ion Formula unit Oxidation number Polyatomic ion Oxyanion Covalent bond Oxyacids Binary acids Octet Rule Valence electrons

15 Single covalent bond Double covalent bond Triple covalent bond

16 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

17 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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