DOWNLOADjkTHEjkTestjkBankjkforjkIntroductionjktojkChemistryjk5thjkEditionjkBauer
IntroductionjktojkChemistry,jk5ejk(Bauer)
Chapterjk2 Atoms,jkIons,jkandjkthejkPeriodicjkTable
1) WhichjkofjkthejkfollowingjkwerejkdefinedjkasjkthejkelementsjkbyjkthejkearlyjkGreeks?
A) earth,jkwind,jkandjkfire
B) earth,jkair,jkfire,jkandjkwater
C) carbon,jkhydrogen,jkandjkoxygen
D) sun,jksand,jkandjkwater
E) nonejkofjkthese
2) Whichjkofjkthejkfollowingjkstatementsjkregardingjkatomsjkandjkatomicjktheoryjkisjkincorrect?
A) "Atomos"jkisjkajkGreekjkwordjkmeaningjkunbreakable.
B) Democritus,jkajkGreekjkphilosopher,jkbelievedjkthatjkmatterjkcouldjkbejkbrokenjkdownjkintojkinfini
telyjksmalljkpieces.
C) ThejkancientjkGreeksjkbelievedjkthatjkalljkmatterjkisjkmadejkofjkfourjkelements:j k earth,jkair,jkfire
,jkandjkwater.
D) Anjkelementjkisjkajksubstancejkthatjkcannotjkbejkbrokenjkdownjkintojksimplerjksubstances.
E) Byjkthejk1700s,jkalljkchemistsjkbelievedjkthatjkelementsjkwerejkmadejkofjkatoms.
3) Whichjkofjkthejkfollowingjkstatementsjkregardingjkatomsjkandjkatomicjktheoryjkisjkincorrect?
A) AntoinejkLavoisierjkdiscoveredjkinjkthejklatejk1700sjkthatjkmatterjkisjknotjkgainedjkorjklostjkinjkajkche
micaljkreaction.
B) JosephjkProustjkshowedjkthatjkwhenjkelementsjkcombinejktojkformjknewjksubstances,jktheyjkdojks
ojkinjkspecificjkmassjkratios.
C) Accordingjktojkthejklawjkofjkmultiplejkproportions,jkwhenjkwaterjkforms,jkthejkmassjkratiojkofjkhydr
ogenjktojkoxygenjkisjkvariable.
D) JohnjkDalton'sjkatomicjktheoryjkdisagreedjkwithjkthejkancientjkGreekjkphilosophers'jkideasjkab
outjkmatter.
E) ThejkGreekjkphilosophersjkdidjknotjkconductjkexperimentsjktojksupportjktheirjkideas.
1
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
,DOWNLOADjkTHEjkTestjkBankjkforjkIntroductionjktojkChemistryjk5thjkEditionjkBauer
4) Thejkfigurejkshowsjkajkmolecular-
leveljkdiagramjkofjkthejkchemicaljkreactionjkbetweenjkhydrogenjkandjknitrogenjktojkformjkammonia.jk
Whatjkisjkwrongjkwithjkthisjkdiagram?
A) Thejkproductsjkcontainjkmorejknitrogenjkatomsjkthanjkthejkreactants.
B) Thejkproductsjkcontainjkmorejkhydrogenjkatomsjkthanjkthejkreactants.
C) Thejknumberjkofjkreactantjkmoleculesjkshouldjkequaljkthejknumberjkofjkproductjkmolecules.
D) Thejkproductsjkshouldjkcontainjksomejkunreactedjkhydrogen.
E) Thejkproductjkammoniajkmoleculesjkshouldjkhavejkonlyjktwojkhydrogenjkatomsjkattachedjktojknitroge
n.
5) Whichjkofjkthejkfollowingjkelementsjkisjknotjkonejkofjkthejkthreejkmostjkabundantjkelementsjkinjkthejkh
umanjkbody?
A) carbon
B) oxygen
C) iron
D) hydrogen
6) Whichjkofjkthejkfollowingjkstatementsjkisjkincorrect?
A) Thejkhumanjkbodyjkisjkmadejkupjkofjkaboutjk99%jkcarbon,jkhydrogen,jkandjkoxygen.
B) Essentialjkmineralsjkcomejkfromjkthejkfoodsjkwejkeatjkandjkdrink.
C) Mostjkofjkthejkessentialjkmineralsjkinjkourjkdietjkarejkclassifiedjkasjkmetalsjkonjkthejkperiodicjktable.
D) Mineralsjkarejknecessaryjkforjkthejkgrowthjkandjkproductionjkofjkbones,jkteeth,jkblood,jketc.
E) Magnesiumjkisjkajkbuilding-blockjkforjkhemoglobin,jkwhichjkcarriesjkoxygenjkinjkourjkblood.
2
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
,DOWNLOADjkTHEjkTestjkBankjkforjkIntroductionjktojkChemistryjk5thjkEditionjkBauer
7) Whichjkofjkthejkfollowingjkobservationsjkdoesjknotjkrelatejkspecificallyjktojkthejklawjkofjkdefi
nitejkproportions?
A) Purejkwaterjkisjkcomposedjkofjkthejkelementsjkoxygenjkandjkhydrogenjkinjkajkmassjkratiojkofjk8jktojk1.
B) Anyjksamplejkofjkajkgivenjkcompoundjkalwaysjkcontainsjkthejksamejkproportionsjkbyjkmassjkof
jkthejkcomponentjkelements.
C) Thejkmassjkofjkthejkproductsjkofjkajkchemicaljkreactionjkisjkequaljktojkthejkmassjkofjkthejkstartingjkmat
erialsjkofjkthejkreaction.
D) Whenjkajkmetaljkreactsjkwithjkoxygen,jkthejkoxygenjkcontentjkofjkthejkproductsjkisjkfixedjkatjkonejko
rjktwojkvalues.
E) Whenjkwaterjkisjkbrokenjkdownjkintojkitsjkelementsjkbyjkelectrolysis,jkelementaljkoxygenjkandjkhydr
ogenjkarejkformedjkinjkanjk8jktojk1jkmassjkratio.
8) WhichjkofjkthejkfollowingjkisjknotjkpartjkofjkDalton'sjkatomicjktheory?
A) Alljkmatterjkisjkcomposedjkofjksmalljkindivisiblejkparticlesjkcalledjkatoms.
B) Alljkatomsjkofjkajkgivenjkelementjkhavejkidenticaljkmassjkandjkchemicaljkproperties.
C) Atomsjkofjkonejkelementjkcanjkbejkchangedjktojkatomsjkofjkanotherjkelementjkinjkajkchemicaljkreaction
.
D) Atomsjkcombinejkinjkwhole-numberjkratiosjktojkformjkchemicaljkcompounds.
E) Chemicaljkreactionsjkinvolvejkajkrearrangementjkofjkthejkatomsjkinjkthejkstartingjkmaterials.
9) Whichjkofjkthejkfollowingjkstatementsjkregardingjkatomicjktheoryjkisjkincorrect?
A) JohnjkDalton'sjkexperimentaljkresultsjkledjktojkthejklawjkofjkconservationjkofjkmass.
B) AntoinejkLavoisier'sjkexperimentsjkshowedjkthatjkthejkmassjkofjkthejkproductsjkofjkajkchemicaljkreac
tionjkequalsjkthejkmassjkofjkthejkreactingjksubstances.
C) Whenjkwoodjkisjkburned,jkthejkashesjkweighjklessjkthanjkthejkoriginaljkwood,jkbutjkthisjkisjknotjkajkvio
lationjkofjkthejklawjkofjkconservationjkofjkmatter.
D) Dalton'sjkatomicjktheoryjksaysjkthatjkajkchemicaljkreactionjkisjkajkrearrangementjkofjkatomsjkintojko
nejkorjkmorejkdifferentjkchemicaljksubstances.
E) JosephjkProust'sjkfindingsjkregardingjkthejkreactionsjkbetweenjkmetalsjkandjkoxygenjkledjktojkthejkla
wjkofjkdefinitejkproportions.
10) Dalton'sjkatomicjktheoryjkconsistedjkofjkalljkthejkfollowingjkpostulatesjkexcept
A) Elementsjkarejkcomposedjkofjkindivisiblejkparticlesjkcalledjkatoms.
B) Atomsjkofjkdifferentjkelementsjkhavejkdifferentjkproperties.
C) Thejkvolumesjkofjkgasesjkthatjkcombinejkarejkinjksmalljkwholejknumberjkratios.
D) Atomsjkcombinejkinjkfixedjkratiosjkofjkwholejknumbersjkwhenjktheyjkformjkcompounds.
E) Injkchemicaljkreactions,jkatomsjkarejknotjkcreatedjkorjkdestroyed.
11) Rutherford'sjkscatteringjkexperimentjkdemonstrated
A) thejkexistencejkofjkprotons.
B) thejkexistencejkofjkelectrons.
C) thejkexistencejkofjkneutrons.
D) thatjkmostjkofjkthejkmassjkofjkanjkatomjkisjkinjkitsjknucleus.
E) thatjkthejkcharge-to-massjkratiojkofjkanjkelectronjkisjkconstant.
3
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
, DOWNLOADjkTHEjkTestjkBankjkforjkIntroductionjktojkChemistryjk5thjkEditionjkBauer
12) ForjkthejkSO3jkmolecule,jkthejkLawjkofjkDefinitejkProportionsjkrequiresjkthatjkthejkmassjkratiojkofjkSj
ktojkOjkmustjkbe
A) 32:16
B) 32:32
C) 32:48
D) 16:32
E) 16:8
13) Thejksubatomicjkparticlesjkthatjkmakejkupjkthejkatomjk(ofjkinterestjktojkchemists)jkincludejkalljko
fjkthejkfollowingjkexceptjkthe:
A) proton.
B) alphajkparticle.
C) electron.
D) neutron.
E) alphajkparticlejkandjkneutron.
14) Injkanyjkneutraljkatom:
A) thejknumberjkofjkelectronsjkequalsjkthejknumberjkofjkprotons.
B) thejknumberjkofjkelectronsjkisjklessjkthanjkthejknumberjkofjkprotons.
C) thejknumberjkofjkelectronsjkisjkgreaterjkthanjkthejknumberjkofjkprotons.
D) thejknumberjkofjkelectronsjkisjkequaljktojkthejknumberjkofjkneutrons.
E) thejknumberjkofjkneutronsjkisjkalwaysjkequaljktojkthejknumberjkofjkprotons.
15) Anjkatomjkcontains
A) asjkmanyjkneutronsjkasjkelectrons.
B) asjkmanyjkprotonsjkasjkneutrons.
C) asjkmanyjknucleijkasjkelectrons.
D) asjkmanyjkelectronsjkasjkprotons.
E) nojkprotons.
16) Whichjkofjkthejkfollowingjkstatementsjkregardingjkthejknucleusjkofjkthejkatomjkisjkincorrect?
A) Thejknucleusjkisjkthejkcentraljkcorejkofjkthejkatom.
B) Thejknucleusjkcontainsjkthejkelectronsjkandjkthejkprotons.
C) Thejknucleusjkcontainsjkmostjkofjkthejkmassjkofjkthejkatom.
D) Thejknucleusjkcontainsjkthejkneutrons.
E) Thejknucleusjkcontainsjkthejkneutronsjkandjkprotonsjkandjkmostjkofjkthejkmassjkofjkthejkatom.
17) Whichjkparticlesjkarejkfoundjkinjkthejkatomicjknucleus?
A) Protonsjkandjkelectrons
B) Electronsjkandjkneutrons
C) Protonsjkandjkneutrons
D) Onlyjkelectrons
E) Onlyjkneutrons
4
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
IntroductionjktojkChemistry,jk5ejk(Bauer)
Chapterjk2 Atoms,jkIons,jkandjkthejkPeriodicjkTable
1) WhichjkofjkthejkfollowingjkwerejkdefinedjkasjkthejkelementsjkbyjkthejkearlyjkGreeks?
A) earth,jkwind,jkandjkfire
B) earth,jkair,jkfire,jkandjkwater
C) carbon,jkhydrogen,jkandjkoxygen
D) sun,jksand,jkandjkwater
E) nonejkofjkthese
2) Whichjkofjkthejkfollowingjkstatementsjkregardingjkatomsjkandjkatomicjktheoryjkisjkincorrect?
A) "Atomos"jkisjkajkGreekjkwordjkmeaningjkunbreakable.
B) Democritus,jkajkGreekjkphilosopher,jkbelievedjkthatjkmatterjkcouldjkbejkbrokenjkdownjkintojkinfini
telyjksmalljkpieces.
C) ThejkancientjkGreeksjkbelievedjkthatjkalljkmatterjkisjkmadejkofjkfourjkelements:j k earth,jkair,jkfire
,jkandjkwater.
D) Anjkelementjkisjkajksubstancejkthatjkcannotjkbejkbrokenjkdownjkintojksimplerjksubstances.
E) Byjkthejk1700s,jkalljkchemistsjkbelievedjkthatjkelementsjkwerejkmadejkofjkatoms.
3) Whichjkofjkthejkfollowingjkstatementsjkregardingjkatomsjkandjkatomicjktheoryjkisjkincorrect?
A) AntoinejkLavoisierjkdiscoveredjkinjkthejklatejk1700sjkthatjkmatterjkisjknotjkgainedjkorjklostjkinjkajkche
micaljkreaction.
B) JosephjkProustjkshowedjkthatjkwhenjkelementsjkcombinejktojkformjknewjksubstances,jktheyjkdojks
ojkinjkspecificjkmassjkratios.
C) Accordingjktojkthejklawjkofjkmultiplejkproportions,jkwhenjkwaterjkforms,jkthejkmassjkratiojkofjkhydr
ogenjktojkoxygenjkisjkvariable.
D) JohnjkDalton'sjkatomicjktheoryjkdisagreedjkwithjkthejkancientjkGreekjkphilosophers'jkideasjkab
outjkmatter.
E) ThejkGreekjkphilosophersjkdidjknotjkconductjkexperimentsjktojksupportjktheirjkideas.
1
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
,DOWNLOADjkTHEjkTestjkBankjkforjkIntroductionjktojkChemistryjk5thjkEditionjkBauer
4) Thejkfigurejkshowsjkajkmolecular-
leveljkdiagramjkofjkthejkchemicaljkreactionjkbetweenjkhydrogenjkandjknitrogenjktojkformjkammonia.jk
Whatjkisjkwrongjkwithjkthisjkdiagram?
A) Thejkproductsjkcontainjkmorejknitrogenjkatomsjkthanjkthejkreactants.
B) Thejkproductsjkcontainjkmorejkhydrogenjkatomsjkthanjkthejkreactants.
C) Thejknumberjkofjkreactantjkmoleculesjkshouldjkequaljkthejknumberjkofjkproductjkmolecules.
D) Thejkproductsjkshouldjkcontainjksomejkunreactedjkhydrogen.
E) Thejkproductjkammoniajkmoleculesjkshouldjkhavejkonlyjktwojkhydrogenjkatomsjkattachedjktojknitroge
n.
5) Whichjkofjkthejkfollowingjkelementsjkisjknotjkonejkofjkthejkthreejkmostjkabundantjkelementsjkinjkthejkh
umanjkbody?
A) carbon
B) oxygen
C) iron
D) hydrogen
6) Whichjkofjkthejkfollowingjkstatementsjkisjkincorrect?
A) Thejkhumanjkbodyjkisjkmadejkupjkofjkaboutjk99%jkcarbon,jkhydrogen,jkandjkoxygen.
B) Essentialjkmineralsjkcomejkfromjkthejkfoodsjkwejkeatjkandjkdrink.
C) Mostjkofjkthejkessentialjkmineralsjkinjkourjkdietjkarejkclassifiedjkasjkmetalsjkonjkthejkperiodicjktable.
D) Mineralsjkarejknecessaryjkforjkthejkgrowthjkandjkproductionjkofjkbones,jkteeth,jkblood,jketc.
E) Magnesiumjkisjkajkbuilding-blockjkforjkhemoglobin,jkwhichjkcarriesjkoxygenjkinjkourjkblood.
2
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
,DOWNLOADjkTHEjkTestjkBankjkforjkIntroductionjktojkChemistryjk5thjkEditionjkBauer
7) Whichjkofjkthejkfollowingjkobservationsjkdoesjknotjkrelatejkspecificallyjktojkthejklawjkofjkdefi
nitejkproportions?
A) Purejkwaterjkisjkcomposedjkofjkthejkelementsjkoxygenjkandjkhydrogenjkinjkajkmassjkratiojkofjk8jktojk1.
B) Anyjksamplejkofjkajkgivenjkcompoundjkalwaysjkcontainsjkthejksamejkproportionsjkbyjkmassjkof
jkthejkcomponentjkelements.
C) Thejkmassjkofjkthejkproductsjkofjkajkchemicaljkreactionjkisjkequaljktojkthejkmassjkofjkthejkstartingjkmat
erialsjkofjkthejkreaction.
D) Whenjkajkmetaljkreactsjkwithjkoxygen,jkthejkoxygenjkcontentjkofjkthejkproductsjkisjkfixedjkatjkonejko
rjktwojkvalues.
E) Whenjkwaterjkisjkbrokenjkdownjkintojkitsjkelementsjkbyjkelectrolysis,jkelementaljkoxygenjkandjkhydr
ogenjkarejkformedjkinjkanjk8jktojk1jkmassjkratio.
8) WhichjkofjkthejkfollowingjkisjknotjkpartjkofjkDalton'sjkatomicjktheory?
A) Alljkmatterjkisjkcomposedjkofjksmalljkindivisiblejkparticlesjkcalledjkatoms.
B) Alljkatomsjkofjkajkgivenjkelementjkhavejkidenticaljkmassjkandjkchemicaljkproperties.
C) Atomsjkofjkonejkelementjkcanjkbejkchangedjktojkatomsjkofjkanotherjkelementjkinjkajkchemicaljkreaction
.
D) Atomsjkcombinejkinjkwhole-numberjkratiosjktojkformjkchemicaljkcompounds.
E) Chemicaljkreactionsjkinvolvejkajkrearrangementjkofjkthejkatomsjkinjkthejkstartingjkmaterials.
9) Whichjkofjkthejkfollowingjkstatementsjkregardingjkatomicjktheoryjkisjkincorrect?
A) JohnjkDalton'sjkexperimentaljkresultsjkledjktojkthejklawjkofjkconservationjkofjkmass.
B) AntoinejkLavoisier'sjkexperimentsjkshowedjkthatjkthejkmassjkofjkthejkproductsjkofjkajkchemicaljkreac
tionjkequalsjkthejkmassjkofjkthejkreactingjksubstances.
C) Whenjkwoodjkisjkburned,jkthejkashesjkweighjklessjkthanjkthejkoriginaljkwood,jkbutjkthisjkisjknotjkajkvio
lationjkofjkthejklawjkofjkconservationjkofjkmatter.
D) Dalton'sjkatomicjktheoryjksaysjkthatjkajkchemicaljkreactionjkisjkajkrearrangementjkofjkatomsjkintojko
nejkorjkmorejkdifferentjkchemicaljksubstances.
E) JosephjkProust'sjkfindingsjkregardingjkthejkreactionsjkbetweenjkmetalsjkandjkoxygenjkledjktojkthejkla
wjkofjkdefinitejkproportions.
10) Dalton'sjkatomicjktheoryjkconsistedjkofjkalljkthejkfollowingjkpostulatesjkexcept
A) Elementsjkarejkcomposedjkofjkindivisiblejkparticlesjkcalledjkatoms.
B) Atomsjkofjkdifferentjkelementsjkhavejkdifferentjkproperties.
C) Thejkvolumesjkofjkgasesjkthatjkcombinejkarejkinjksmalljkwholejknumberjkratios.
D) Atomsjkcombinejkinjkfixedjkratiosjkofjkwholejknumbersjkwhenjktheyjkformjkcompounds.
E) Injkchemicaljkreactions,jkatomsjkarejknotjkcreatedjkorjkdestroyed.
11) Rutherford'sjkscatteringjkexperimentjkdemonstrated
A) thejkexistencejkofjkprotons.
B) thejkexistencejkofjkelectrons.
C) thejkexistencejkofjkneutrons.
D) thatjkmostjkofjkthejkmassjkofjkanjkatomjkisjkinjkitsjknucleus.
E) thatjkthejkcharge-to-massjkratiojkofjkanjkelectronjkisjkconstant.
3
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
, DOWNLOADjkTHEjkTestjkBankjkforjkIntroductionjktojkChemistryjk5thjkEditionjkBauer
12) ForjkthejkSO3jkmolecule,jkthejkLawjkofjkDefinitejkProportionsjkrequiresjkthatjkthejkmassjkratiojkofjkSj
ktojkOjkmustjkbe
A) 32:16
B) 32:32
C) 32:48
D) 16:32
E) 16:8
13) Thejksubatomicjkparticlesjkthatjkmakejkupjkthejkatomjk(ofjkinterestjktojkchemists)jkincludejkalljko
fjkthejkfollowingjkexceptjkthe:
A) proton.
B) alphajkparticle.
C) electron.
D) neutron.
E) alphajkparticlejkandjkneutron.
14) Injkanyjkneutraljkatom:
A) thejknumberjkofjkelectronsjkequalsjkthejknumberjkofjkprotons.
B) thejknumberjkofjkelectronsjkisjklessjkthanjkthejknumberjkofjkprotons.
C) thejknumberjkofjkelectronsjkisjkgreaterjkthanjkthejknumberjkofjkprotons.
D) thejknumberjkofjkelectronsjkisjkequaljktojkthejknumberjkofjkneutrons.
E) thejknumberjkofjkneutronsjkisjkalwaysjkequaljktojkthejknumberjkofjkprotons.
15) Anjkatomjkcontains
A) asjkmanyjkneutronsjkasjkelectrons.
B) asjkmanyjkprotonsjkasjkneutrons.
C) asjkmanyjknucleijkasjkelectrons.
D) asjkmanyjkelectronsjkasjkprotons.
E) nojkprotons.
16) Whichjkofjkthejkfollowingjkstatementsjkregardingjkthejknucleusjkofjkthejkatomjkisjkincorrect?
A) Thejknucleusjkisjkthejkcentraljkcorejkofjkthejkatom.
B) Thejknucleusjkcontainsjkthejkelectronsjkandjkthejkprotons.
C) Thejknucleusjkcontainsjkmostjkofjkthejkmassjkofjkthejkatom.
D) Thejknucleusjkcontainsjkthejkneutrons.
E) Thejknucleusjkcontainsjkthejkneutronsjkandjkprotonsjkandjkmostjkofjkthejkmassjkofjkthejkatom.
17) Whichjkparticlesjkarejkfoundjkinjkthejkatomicjknucleus?
A) Protonsjkandjkelectrons
B) Electronsjkandjkneutrons
C) Protonsjkandjkneutrons
D) Onlyjkelectrons
E) Onlyjkneutrons
4
Copyrightjk2019jk©jkMcGraw-
HilljkEducation.jkAlljkrightsjkreserved.jkNojkreproductionjkorjkdistributionjkwithoutjkthejkpriorjkwrittenjkconsentjkofjkM
cGraw-HilljkEducation.
mynursytest.store
