初中化学知识大全 化学反应方程式（chemistry reaction equation of chemistry knowledge in junior middle school）

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1、初中化学知识大全化学反应方程式（Chemistryreactionequationofchemistryknowledgeinjuniormiddleschool）JuniorhighschoolchemistryknowledgeDaquanchemicalreactionequation.Txtmarriageisakeyboard,toomanyordersandrules;loveisthemouse,oneclick.Themanismoreimportantthanthehost,thememoryisthemostimportant;thewomanislik

2、ethemonitor,everythingcanbeseen.ChemicalreactionequationFirst,thenatureofoxygen:(1)reactionofsimplesubstancewithoxygen:(chemicalreaction)1.mgcombustioninair:2Mg+O2ignite2MgO2.ironburnsinoxygen:3Fe+2O2ignitesFe3O43.copperheatedintheair:2Cu+O2heating2CuO4.aluminumcombustioninair:4Al+3O2ignit

3、e2Al2O35.hydrogencombustioninair:2H2+O2ignited2H2O6.redphosphoruscombustioninair(aircompositionexperiment):4P+5O2light2P2O57.sulfurpowderburnsinair:S+O2ignitesSO28.carbonisfullycombustedinoxygen:C+O2ignitesCO29.carbonisnotfullycombustedinoxygen:2C+O2ignites2CO(2)reactionsofcompoundswithoxy

4、gen:10.carbonmonoxideburnsinoxygen:2CO+O2ignites2CO211.methanecombustioninair:CH4+2O2ignitedCO2+2H2O12.alcoholburnsinair:C2H5OH+3O2ignites2CO2+3H2O(3)thesourceofoxygen:13.ofthecomponentsofairBoyleexperimental2HgOHg+O2heatingup14.:2KMnO4heatingheatingPotassiumPermanganateK2MnO4+MnO2+O2=(lab

5、oratoryoxygenprinciple1)15.hydrogenperoxideascatalystunderconditionsinmanganesedioxidedecompositionreaction:H2O2O2=MnO22H2O+(laboratoryoxygenprinciple2)Two.Waterinnature:16.waterdecompositionundertheeffectofdirectcurrent(anexperimentalstudyonwater):2H2O+O2=2H2=electricity17.limewatersolubl

6、e:CaO+H2O=Ca(OH)218.carbondioxidesolubleinwater:H2O+CO2==H2CO3Three.Thelawofconservationofmass:19.mgcombustioninair:2Mg+O2ignite2MgO20.ironandcoppersulfatesolutionreaction:Fe+CuSO4=FeSO4+Cu21.hydrogenreductionofCuO:H2+CuOheatingCu+H2O22.mgreducedCuO:Mg+CuOheatingCu+MgOFour,carbonandcarbono

7、xides:(1)thechemicalpropertiesofcarbon23.carbonisfullycombustedinoxygen:C+O2ignitesCO224.:C+charcoalreductionofcopperoxidehigh-temperature2Cu+CO2=2CuO25.3C+2Fe2O3hightemperaturecokereductionironoxide:4Fe+3CO2=(2)thethreereactionsoccurringinthecoalfurnace:(seve