L L L L L L L L L L L
Chemistry:LTheLCentralLScience,L14eL(Brown,LetLal.)
ChapterL2L Atoms,LMolecules,LandLIons
L
2.1 Multiple-ChoiceLQuestions
1) ALmoleculeLofLwaterLcontainsLhydrogenLandLoxygenLinLaL1:8LratioLbyLmass.LThisLisLaLstatemen
tLof .
A) theLlawLofLmultipleLproportions
B) theLlawLofLconstantLcomposition
C) theLlawLofLconservationLofLmass
D) theLlawLofLconservationLofLenergy
E) noneLofLtheLabov
eLAnswer:LB
Diff:L2 Var:L1 PageLRef:LSec.L2.1
LO:L2.1L
GO:L G2
2) WhichLoneLofLtheLfollowingLisLnotLoneLofLtheLpostulatesLofLDalton'sLatomicLtheory?
A) AtomsLareLcomposedLofLprotons,Lneutrons,LandLelectrons.
B) AllLatomsLofLaLgivenLelementLareLidentical;LtheLatomsLofLdifferentLelementsLareLdifferentLan
dLhaveLdifferentLproperties.
C) AtomsLofLanLelementLareLnotLchangedLintoLdifferentLtypesLofLatomsLbyLchemicalLreactions
:LatomsLareLneitherLcreatedLnorLdestroyedLinLchemicalLreactions.
D) CompoundsLareLformedLwhenLatomsLofLmoreLthanLoneLelementLcombine;LaLgivenLcompoundL
alwaysLhasLtheLsameLrelativeLnumberLandLkindLofLatoms.
E) EachLelementLisLcomposedLofLextremelyLsmallLparticlesLcalledLatoms
.LAnswer:L A
Diff:L1 Var:L1 PageLRef:LSec.L2.1
LO:L2.1L
GO:L G2
3) ConsiderLtheLfollowingLselectedLpostulatesLofLDalton'sLatomicLtheory:
(i) EachLelementLisLcomposedLofLextremelyLsmallLparticlesLcalledLatoms.
(ii) AtomsLareLindivisible.
(iii) AtomsLofLaLgivenLelementLareLidentical.
(iv) AtomsLofLdifferentLelementsLareLdifferentLandLhaveLdifferentLproperties.
WhichLofLtheLpostulatesLis(are)LnoLlongerLconsideredLvalid?
A) (i)LandL(ii)
B) (ii)Lonly
C) (ii)LandL(iii)
D) (iii)Lonly
E) (iii)LandL(iv)L
Answer:L C
Diff:L2 Var:L1 PageLRef:LSec.L2.1
LO:L2.1L
GO:L G2
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4) WhichLpairLofLsubstancesLcouldLbeLusedLtoLillustrateLtheLlawLofLmultipleLproportions?
A) SO2,LH2SO4
B) CO,LCO2
C) H2O,LO2
D) CH4,LC6H12O6
E) NaCl,LKCl
Answer:LB
L
Diff:L1 Var:L1 PageLRef:LSec.L2.1
LO:L2.1L
GO:L G2
5) WhichLstatementLbelowLcorrectlyLdescribesLtheLresponsesLofLalpha,Lbeta,LandLgammaLradiatio
nLtoLanLelectricLfield?
A) BothLbetaLandLgammaLareLdeflectedLinLtheLsameLdirection,LwhileLalphaLshowsLnoLresponse.
B) BothLalphaLandLgammaLareLdeflectedLinLtheLsameLdirection,LwhileLbetaLshowsLnoLresponse.
C) BothLalphaLandLbetaLareLdeflectedLinLtheLsameLdirection,LwhileLgammaLshowsLnoLresponse.
D) AlphaLandLbetaLareLdeflectedLinLoppositeLdirections,LwhileLgammaLshowsLnoLresponse.
E) OnlyLalphaLisLdeflected,LwhileLbetaLandLgammaLshowLnoLresponse
.LAnswer:L D
Diff:L2 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
6) WhichLoneLofLtheLfollowingLisLnotLtrueLconcerningLcathodeLrays?
A) TheyLoriginateLfromLtheLnegativeLelectrode.
B) TheyLtravelLinLstraightLlinesLinLtheLabsenceLofLelectricLorLmagneticLfields.
C) TheyLimpartLaLnegativeLchargeLtoLmetalsLexposedLtoLthem.
D) TheyLareLmadeLupLofLelectrons.
E) TheLcharacteristicsLofLcathodeLraysLdependLonLtheLmaterialLfromLwhichLtheyLareLemitted
.LAnswer:L E
Diff:L2 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
7) TheLchargeLonLanLelectronLwasLdeterminedLinLthe .
A) cathodeLrayLtube,LbyLJ.LJ.LThomson
B) RutherfordLgoldLfoilLexperiment
C) MillikanLoilLdropLexperiment
D) DaltonLatomicLtheory
E) atomicLtheoryLofLmatte
rLAnswer:L C
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
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8) L -raysLconsistLofLfast-movingLelectrons.
A) Alpha
B) Beta
C) Gamma
D) X
E) noneLofLtheLabov
eLAnswer:LB
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
9) TheLgoldLfoilLexperimentLperformedLinLRutherford'sLlab .
A) confirmedLtheLplum-puddingLmodelLofLtheLatom
B) ledLtoLtheLdiscoveryLofLtheLatomicLnucleus
C) wasLtheLbasisLforLThomson'sLmodelLofLtheLatom
D) utilizedLtheLdeflectionLofLbetaLparticlesLbyLgoldLfoil
E) provedLtheLlawLofLmultipleLproportion
sLAnswer:LB
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
10) InLtheLRutherfordLnuclear-atomLmodel, .
A) theLheavyLsubatomicLparticles,LprotonsLandLneutrons,LresideLinLtheLnucleus
B) theLthreeLprincipalLsubatomicLparticlesL(protons,Lneutrons,LandLelectrons)LallLhaveLessentiall
yLtheLsameLmass
C) theLlightLsubatomicLparticles,LprotonsLandLneutrons,LresideLinLtheLnucleus
D) massLisLspreadLessentiallyLuniformlyLthroughoutLtheLatom
E) theLthreeLprincipalLsubatomicLparticlesL(protons,Lneutrons,LandLelectrons)LallLhaveLessentiall
yLtheLsameLmassLandLmassLisLspreadLessentiallyLuniformlyLthroughoutLtheLatom
Answer:L A
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
11) CathodeLraysLare .
A) neutrons
B) X-rays
C) electrons
D) protons
E) atomsL
Answer:L C
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
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12) CathodeLraysLareLdeflectedLawayLfromLaLnegativelyLchargedLplateLbecause .
A) theyLareLnotLparticles
B) theyLareLpositivelyLchargedLparticles
C) theyLareLneutralLparticles
D) theyLareLnegativelyLchargedLparticles
E) theyLareLemittedLbyLallLmatte
rLAnswer:L D
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
13) InLtheLabsenceLofLmagneticLorLelectricLfields,LcathodeLrays .
A) doLnotLexist
B) travelLinLstraightLlines
C) cannotLbeLdetected
D) becomeLpositivelyLcharged
E) bendLtowardLaLlightLsourceL
Answer:LB
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
14) OfLtheLthreeLtypesLofLradioactivityLcharacterizedLbyLRutherford,LwhichLis/areLelectricall
yLcharged?
A) β-rays
B) α-raysLandLβ-rays
C) α-rays,Lβ-rays,LandLγ-rays
D) α-rays
E) α-raysLandLγ-rays
Answer:L B
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
15) OfLtheLthreeLtypesLofLradioactivityLcharacterizedLbyLRutherford,LwhichLis/areLnotLelectricall
yLcharged?
A) α-rays
B) α-rays,Lβ-rays,LandLγ-rays
C) γ-rays
D) α-raysLandLβ-rays
E) α-raysLandLγ-rays
Answer:L C
Diff:L1 Var:L1 PageLRef:LSec.L2.2
LO:L2.2L
GO:L G2
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