Chemch8equations Write & Balance

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    anuary4seepage206&832Preclass:namethefollowingcovalent

    compoundsusingtheprefixmethod.SO

    2Np

    3O

    8

    CON2O

    5

    CCl4Si3N4PBr

    3PtF

    6

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    Dec20,2012.Objective:Tobeabletowritesentencesdescribing

    reactionequations.PreClass:CopyTable2page265intoyournotes.

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    Chapter8:

    1.Listsomeexamplesof

    chemicalreactions

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    C apter8:1.Listsomeexamplesofchemicalreactions

    a.Lightingamatchb.dyeingyourhair-chemicalchangec.Combiningcopperandnitricacid.d.reactingsodiumandchlorinetomakesalt.

    e.burningwood.Bakingsodaandvinegarreacting..Aluminumreactingwithsulfuricacid.

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    2.Evidenceofchemicalchanges.See

    Table1seepage261

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    3.Reactionscanbediscussedintermsofreactantsandproducts:

    ReactantsProductsIronandOxygenRustGasandoxygenCarbondioxideandwater

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    4.TermsneededforlearningaboutChemicalReactionsandEquationsChapter8

    WriteameaningordefinitionforeachoftheollowingReactantProduct--->coefficient

    subscript(aq)page263diatomicelementPage23N

    2,H

    2,O

    2F

    2,Cl

    2

    BrI

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    5.Exampleofachemicalequation.WritetheequationforthereactionofmethanegaswithgaseousoxygenwhichieldsCarbondioxidegasandwatervapor.

    Methanegas+Oxygengas---->Carbondioxidegas+watervapor

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    5.Exampleofachemicalequation.Writetheequationforthereactionofmethan

    aswithgaseousoxygenwhichyieldsCarbondioxidegasandwatervapor.

    CH4(g)+O

    2(g)CO

    2(g)+H

    2O(g)

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    CH4(g)+O

    2(g)CO

    2(g)+H

    2O(g)

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    Do now

    Page 266 # 9, #10 # 17

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    Copyeachequationinyournotebook.leave3linesbeloweachonetowriteoutthesentencedescribing

    thereaction.#17Page26617a.Zn(s)+2HCl(aq)ZnCl

    2(aq)+H

    2(g)

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    Copyeachequationinyournotebook.leave3linesbeloweachonetowriteoutthesentence

    describingthereaction.#17Page26617a.Zn(s)+2HCl(aq)ZnCl

    2(aq)+H

    2(g)

    SolidzincisreactedwithHydrochloricacidanditproducesaqueouszincchlorideandHydrogengas.

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    Read the introduction and procedure.copy title, materials, testing reagents, iron

    compounds, Data table. Include all the

    symbols and words.

    Conclusion leave space

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    Read the introduction and

    procedure.

    copy title, materials,

    testing reagents, iron

    compounds, Data table.Include all the symbols

    and words.

    Conclusion leave space

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    NaOH(aq) + HCl(aq) NaCl(aq)+ H2O(l)

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    omework: REad pages

    272 - 273

    age 274 Do # 1 - 4a,b,c,

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    HomeworkPage 266 # 11 - 16

    Turn this in on paperYou must start it now.

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    Chapter 8 Dec 20

    Objective: To know how to balance

    equations containing polyatomic ions. Tobe able to identify types of chemical

    reactions.

    Preclass: p 274 5a &b

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    Si (s) +

    MgCl2

    Objective: to be able to write formulas when giventhe word equation.

    PreclassPage 266 # 9 and10

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    Objective:To learn how to balance equations.

    Pre class: count the number of atoms ineach of these compounds2H

    2O 6 C

    3H

    85 CuSO

    4

    Ni(ClO3)2

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    Do now

    Page 266 # 9 and 10

    9. Silicon tetrachloride + magnesium silicon +magnesium chloride

    Pa

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    Magnesium + Oxygen magnesium oxide

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    IntroduceLabreportproject.

    Decidewhichlabyouwanttowritealabreportabout.Homeworkpage266#5-10ClassworkTranslateeachequationintowords.#17Page266

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    ConstructingachemicalequationSymbolsandformulasrepresentcompoundsCoefficientsshowtherelativeamountofeachsubstanceThenumberofeachtypeofatomoneachsideoftheequationmustbeequalrrowsrepresentyieldsorproduces

    +representscombineswithorreactiswith

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    Page 292 # 8 a- ccopy each then write

    the formulas andequation underneath.Leave several lines towrite it out. Roughdraft first....Charges

    etc.

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