d d d d d d d d d
BiologicaldScience,d6ed(Freeman/Quillin/Allison)
Chapterd2d d WaterdanddCarbon:dThedChemicaldBasisdofdLife
1) Aboutdtwenty-
fivedofdthed92dnaturaldelementsdaredknowndtodbedessentialdtodlife.dWhichd4dofdthesed25delementsd
makedupdapproximatelyd96dpercentdofdlivingdmatter?
A) carbon,dsodium,dhydrogen,dnitrogen
B) carbon,doxygen,dphosphorus,dhydrogen
C) oxygen,dhydrogen,dcalcium,dnitrogen
D) carbon,dhydrogen,dnitrogen,doxygen
E) carbon,doxygen,dnitrogen,dcalciumd
Answer:d D
Bloom'sdTaxonomy:d Remembering/UnderstandingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
2) Whydisdeachdelementduniquedwithdrespectdtoditsdchemicaldproperties?dEachdelementdhasdadd
istinctived .
A) atomicdmass
B) numberdofdelectrons
C) numberdofdprotons
D) numberdofdneutrons
E) radioactivedproperty
dAnswer:d C
Bloom'sdTaxonomy:d Remembering/UnderstandingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
3) Knowingdthedatomicdmassdofdandelementdallowsdinferencesdaboutdwhichdofdthedfollowing?
A) thednumberdofdelectronsdindthedelement
B) thednumberdofdprotonsdindthedelement
C) thednumberdofdneutronsdindthedelement
D) thednumberdofdprotonsdplusdneutronsdindthedelement
E) thednumberdofdprotonsdplusdelectronsdindthedelementd
Answer:d D
Bloom'sdTaxonomy:d Applying/AnalyzingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
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d d d d d d d d d
4) Carbon-
12disdthedmostdcommondisotopedofdcarbondanddhasdadmassdnumberdofd12.dHowever,dthedaveragedato
micdmassdofdcarbondfounddondadperiodicdtabledisdslightlydmoredthand12ddaltons.dWhy?
A) Thedatomicdmassddoesdnotdincludedthedmassdofdelectrons.
B) Somedcarbondatomsdindnaturedhavedandextradproton.
C) Somedcarbondatomsdindnaturedhavedmoredneutrons.
D) Somedcarbondatomsdindnaturedhavedaddifferentdvalencedelectronddistribution.
E) Somedcarbondatomsdindnaturedhavedundergonedradioactiveddecay.d
Answer:d C
Bloom'sdTaxonomy:d Applying/AnalyzingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
5) Fromditsdatomicdnumberdofd15,ditdisdpossibledtodpredictdthatdthedphosphorusdatomdhas
.
A) 5dneutrons,d5dprotons,dandd5delectrons
B) 30dneutrons
C) 15dneutronsdandd15dprotons
D) 8delectronsdinditsdoutermostdelectrondshell
E) 15dprotonsdandd15delectronsd
Answer:d E
Bloom'sdTaxonomy:d Remembering/UnderstandingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
6) Adcovalentdchemicaldbonddisdonedindwhichd .
A) electronsdaredremoveddfromdonedatomdanddtransferreddtodanotherdatomdsodthatdthedtwodatomsdb
ecomedoppositelydcharged
B) protonsdanddneutronsdaredshareddbydtwodatomsdsodasdtodsatisfydthedrequirementsdofdbothdatoms
C) outer-shelldelectronsdofdtwodatomsdaredshareddsodasdtodsatisfactorilydfilldtheirdrespectivedorbitals
D) outer-shelldelectronsdofdonedatomdaredtransferreddtodfilldthedinnerdelectrondshelldofdanotherdatom
E) electronsdfromdthedsamedatom,dbutdoppositedspins,daredpairedd
Answer:d C
Bloom'sdTaxonomy:d Remembering/UnderstandingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
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d d d d d d d d d
7) Nitrogend(N)disdmoredelectronegativedthandhydrogend(H).dWhichdofdthedfollowingdisdadcorrectds
tatementdaboutdthedatomsdindammoniad(NH3)?
A) Eachdhydrogendatomdhasdadpartialdpositivedcharge;dthednitrogendatomdhasdadpartialdnegativedc
harge.
B) Ammoniadhasdandoveralldpositivedcharge.
C) Ammoniadhasdandoveralldnegativedcharge.
D) Thednitrogendatomdhasdadpartialdpositivedcharge;deachdhydrogendatomdhasdadpartialdnegativedc
harge.
E) Theredaredcovalentdbondsdbetweendthedhydrogendatomsdanddpolardbondsdbetweendeachd
hydrogendatomdanddthednitrogendatom.
Answer:d A
Bloom'sdTaxonomy:d Remembering/UnderstandingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
8) Bondsdbetweendtwodatomsdthatdaredequallydelectronegativedared .
A) hydrogendbonds
B) vandderdWaalsdinteractions
C) polardcovalentdbonds
D) nonpolardcovalentdbonds
E) ionicdbonds
dAnswer:d D
Bloom'sdTaxonomy:d Remembering/UnderstandingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
9) Adcovalentdbonddisdlikelydtodbedpolardwhend .
A) onedofdthedatomsdsharingdelectronsdisdmoredelectronegativedthandthedotherdatom
B) thedtwodatomsdsharingdelectronsdaredequallydelectronegative
C) carbondisdonedofdthedtwodatomsdsharingdelectrons
D) onedofdthedatomsdhasdabsorbeddmoredenergydthandthedotherdatom
E) thedtwodatomsdsharingdelectronsdaredthedsamedelementsd
Answer:d A
Bloom'sdTaxonomy:d Remembering/UnderstandingdV&
CdCoredConcept:d EM
V&CdCoredComp:d PSdLO
:d 2.1
Section:d 2.1
3
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