electron cancellation activity：电子消除活性

《electron cancellation activity：电子消除活性》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、PhysicalScienceCP–IonicBondingPuzzleActivityName:Objective:Studentswillbeabletowriteandnamethechemicalformulaofioniccompoundsbymodelingioniccompounds.Introduction:Whenmetalsandnonmetalschemicallyreact,theatomswilltendtoformions,orchargedatoms.Ionsformbecauseelectronsareeithergainedorlost.Metalswillg

2、enerallyformcations,orpositiveions.Nonmetalswillformanions,ornegativeions.Foranionicbond,theoverallchargeofthecompoundisneutral,orzero.Activity:Youwillworkwithapartnertocreatemodelsofioniccompoundsandwritethechemicalformulaoftheioniccompoundsyouhavecreated.WritingChemicalFormulasStep1:Writethesymbol

3、softheelements-metalfirstandnon-metalsecondStep2:WritethechargeeachelementformsasanionabovetheelementStep3:Writeasubscriptnexttoeachonetoexplainshowmanyshapesofeachelementthereareinthesituation*Remember:Onesareinvisible!Example:Lithium+IodineExample:Hydrogen+OxygenStep1:LiIStep1:HOStep2:Li+1I-1Step2

4、:H+1O+2Step3:Li1I1àLiIStep3:H2OIàH2OH+1I-1Li+1O-2H+1Directions:Usingyourionicbondingpieces,createeachbondlistedonthefollowingpages.Theshapeofeachionshowsyouthenumberofelectronsitwillgainorlosetofromabond.Afterfittingthepiecestogether,sketchthepiecesandfillinthetablewithinformationabouttheionsforming

5、thebond.Example:sodiumandchlorineSketch:Cl-1H+1IonNameIonSymbolDotDiagramAnion/CationHowMany?ChemicalFormulasodiumNa+1Nacation1NaClchlorideCl-1Clanion11:potassiumandbromineSketch:IonNameIonSymbolDotDiagramAnion/CationHowMany?ChemicalFormula2:potassiumandchlorineSketch:IonNameIonSymbolDotDiagramAnion

6、/CationHowMany?ChemicalFormula3:sodiumandnitrogenSketch:IonNameIonSymbolDotDiagramAnion/CationHowMany?ChemicalFormula4:sodiumandoxygenSketch:IonNameIonSymbolDotDiagramAnion/CationHowMany?ChemicalFormula5:potassiumandsulfurSketch:IonNameIonSymbolDotDiagramAnion/CationHowMany?ChemicalFormula6:berylliu

7、mandoxygenSketch:IonNameIonSymbolDotDiagramAnion/CationHowMany?ChemicalFormula7:calciumandbromineSketch:IonNameIonSymbolDotDiagramAnion/CationHowMany?ChemicalFormula8:magnesiumandoxygenSketch:IonNameI