CHEMISTRY 101 EXAM 3 QUESTIONS WITH CORRECT ANSWERS

CHEMISTRY 101 EXAM 3 QUESTIONS
WITH CORRECT ANSWERS
TypeBofBprocessBofBtheBformingBofBtheBionicBcompoundsB-BCORRECTBANSWERB--
reactionBisBexothermicBbecauseBofBtheBlatticeBenergyB(itBreleasesBheatBduringBformation)

-transferBofBelectronBfromBmetalsBtoBnonmetalsBisBendothermic



ionicBbondBmodelsB-BCORRECTBANSWERB--
highBheatBtoBbreakBapartBlatticeB(highBmeltingBpoints)BbecauseBthereBareBnoBfreeBelectronsB

-
nondirectionalB(asByouBmoveBawayBfromBtheBcenterBofBtheBionBtheBforcesBareBequallyBasBstrongBinB
allBdirections)B

-
ionicBsolidsBdissolveBinBwaterBorBmelt,BtheBcationsBandBanionsBdissociateBandBfreeBionsBtoBallowBfor
BelectricalBcurrentsBtoBflowBthrough




ionicBcompoundBformulasB-BCORRECTBANSWERB--alwaysBcontainBpositiveBandBnegativeBionsB

-inBaBchemicalBformula,BtheBsumBofBtheBchargesBofBpositiveBcationsBandBnegativeBanionsBareBequalB

-theBformulaBofBanBionicBcompoundBreflectsBtheBsmallestBwholeBnumberBratioBofBions



commonBnamesB-BCORRECTBANSWERB--nicknamesBlearnedBbyBfamiliarity



systematicBnamesB-BCORRECTBANSWERB--determineBfromBtheBchemicalBformulaBandBviceBversa



ionicBcompoundsBareBmadeBupBofB-BCORRECTBANSWERB-metalsBandBnonmetals



electronegativityB-BCORRECTBANSWERB--
abilityBofBanBatomBtoBattractBelectronsBtoBitselfBinBaBchemicalBbondB

, -increasesBacrossBaBperiodBandBdecreasesBdownBaBgroup

-largerBtheBatom,BtheBlessBabilityBitBhasBtoBattractBelectronsBtoBitselfBinBaBchemicalBbond



degreeBofBpolarityB-BCORRECTBANSWERB--
dependsBuponBtheBelectronegativityBdifferenceBbetweenBtwoBbondingBatomsB

-greaterBtheBdifference,BtheBmoreBpolarBtheBbond



nonpolarB(covalent)B-BCORRECTBANSWERB--
twoBatomsBwithBtheBsameBelectronegativitiesBformBaBcovalentBbondBandBshareBelectronsBequally



ionicBbondBinBtermsBofBpolarityB-BCORRECTBANSWERB--
largeBelectronegativityBdifferenceB(suchBasBnormallyBbetweenBaBmetalBandBnonmetal)



polarBcovalentB-BCORRECTBANSWERB--intermediateBelectronegativityBchange



effectBofBelectronegativityBonBtheBbondBtypeB-BCORRECTBANSWERB-SmallBchangeB(0-.4)BCovalentB

IntermediateBchangeB(.4-2)BPolarBCovalentB

LargeBchange(2+)BIonic



dipoleBmomentB-BCORRECTBANSWERB--
occursBanytimeBthereBisBseparationBofBpositiveBandBnegativeBchargeB

-magnitudeBofBtheBmoment=magnitude(q)*distance(r)

-unitsBisBinBDB(debye)

-quantifyBtheBpolarityBofBaBbondBbyBtheBsizeBofBit'sBdipoleBmomentB

-
smallerBtheBmagnitudeBofBtheBchargeBseparationBandBtheBsmallerBtheBdistanceBbetweenBchargesBt
heBsmallerBtheBdipoleBmovement

-moreBchangeBinBelectronegativityBmeansBhigherBdipoleBmovement