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6260 - 1 - Page 1Name:What Greekphilosopherwas the first personto proposethe ideathat matteris madeof tiny individualparticlescalledatoms?1)A) DemocritusB) BohrC) DaltonD) RutherfordIn ancientGreece,it was proposedthatmatteris composedof earth,air, water,and fire, and that dieseelementsA) have similarphysicalpropertiesC) arein continualmotionB) havesimilarchemicalpropertiesD) arestationaryIn the early 1900's,it was proposedthat energymay be absorbedor releasedfrom atomsin small,indivisiblepacketsnamedA) orbitalsC) quantaB) nucleonsD) protons4)5)6)The developmentof the cadioderay tubeled to the discoveryof what subatomicparticle?A) protonC) electronQ) positronD) neutronExperimentalevidenceindicatesthat die nucleusof an atomA) hasa negativechargeB) containsmostof die massof die atomC) hasno chargeD) containsa smallpercentageof die massof the atomWhen alphaparticlesareusedto bombardgold foil, mostof the alphaparticlespassthroughundeflected.This resultindicatesdiat mostof the volumeof a gold atomconsistsofA) unoccupiedspaceB) neutrons7)Comparedto die entireatom,the nucleusof die atomisA)B)C)D)8)C) deuteronsD) protonslargerand containslittle of the atom'smasssmallerand containslittle of the atom'smasssmallerand containsmostof the atom'smasslargerand containsmostof the atom'smassWhich particlehasthe leos/mass?A) a neutronB) a protonC) a deuteronD) an electron9)Which of die following statementsDes/descn'besan electron?A) It hasa smallermassdian a protonand a positivecharge.B) It hasa greatermassdian a protonand a positivecharge.C) It hasa greatermassthana proton and a negativecharge.D) It hasa smallermassthana protonand a negativecharge.10)What particlehasa massof approximatelyone atomicmassunit and a unit positivecharge?A) a neutronC) an alphaparticleB) a betaparticleD) a proton

-6260 1 - Page 211)12)What particleis electricallyneutral?A) neutronC) electronB) positronD) protonWhat particlehasapproximatelythe samemassasa proton?A) neutronC) betaB) electronD) alphaWhich two particleshaveapproximatelythe samemass?A) neutronand electronC) proton and electronB) neutronand deuteronD) proton and neutronHow manyprotonsarein the nucleusof an atomof beryllium?A) 9B) 2C) 5D) 415)What kind of particle,when passedthroughan electricfield, would be attractedto the negativeelectrode?A) a neutronC) an alphaparticleB) a betaparticleD) an electron16)What kind of radiationwill travelthroughan electricfield on a pathwaythatremainsunaffectedbythe field?A) an electronC) an alphaparticleB) a gammarayD) a protonWhat particlewill be attractedto the positiveelectrodein an electricfield?A) a neutronC) a betaparticleB) a positronD) an alphaparticle18)Which particlehasa negativecharge?A) alphaparticleB) neutronC) betaparticleD) proton19)In a sampleof pure copper,aI/atomshaveA) a different atomicnumber,but the samenumberof protonsB) the sameatomicnumberandthe samenumberof protonsC) a differentatomicnumberanda differentnumberof protonsD) the sameatomicnumber,but a differentnumberof protons20)A substancethat is composedonly of atomshavingthe sameatomicnumberis classifiedas21)22)A) a compoundB) an elementC) a homogeneousmixtureD) a heterogeneousmixtureWhich atomhasthegrea/es/nuclearcharge?A) AlB) NaC) SiWhich atomhasthegreIJ/es/nuclearcharge?D) Ar

- -6260 1 Page 323)Whatis thenuclearchargeof aD atomwith a massof 23 andanatomicnumberof 11?A)24)25)34 B)23 C)12 As anN a atomforms anN a io the numberof protonsin its nucleusA)' decreasesB) increases11 C) remainsthe sameA particleof mattercontains6 protons,7 neutrons,and 6 elecb'Ons.This particlemustbe aA) neutralcarbonatomB) positivelychargedcarbonionC) neutralnitrogenatomD) positivelychargednitrogenion2 What is the symbolfor an atomcontaining20 protonsand22 neutrons?27)Comparedto an atomofC-12, an atomofC-14 basC) moreprotonsD) fewer neutronsA) fewer protonsB) moreneutrons28)D)What is the massnumberof the atombelow?3H1A)1B) 2C) 3D) 429)What is the massnumberof an atomthat contains19 protons,19 electrons,and 20 neutrons?A) 39B) 20C) 19D) 5830)AnA)B)C)D)31)How manyprotonsandneutronsis the nucleusof the atombelow composedof?atomof carbon-14contains8 protons,6 neutrons,and6 electrons6 protons,6 neutrons,and 8 electrons6 protons,8 neutrons,and6 electrons6 protons,8 neutrons,and 8 electrons127153A) 53 protonsand 127neutronsB) 53 neutronsand 127protons32)33)C) 53 protonsand 74 electronsD) 53 protonsand 74 neutronsThe atomicmassof an elementis definedasthe weightedaveragemassof that elemenfsA) leastabundantisotopeC) naturallyoccumngisotopesB) mostabundantisotopeD) radioactiveisotopesA sampleof elementXcontains90. percent3SXatoms,8.0 percent37Xatoms,and 2.0 percent38Xatoms.The averageisotopicmassis closes/toA) 38B) 3SC) 37D) 32

6260 - 1 - Page 434)Isotopesof the sameelementmust alsohavethe sameC) atomicnumberD) numberof neutronsA) numberof nucleonsB) massnumber35)36)Which symbolrepresentsan isotopeof carbon?A) 12X537)38)39)B) 14X7C) 13X6D) 6%4Usually die tenn "kernel" includesoUpartsof die atomacepltheA) valenceelectronsC) neutronsB) omital electronsD) protonsAn atomof chlorineand an atomof brominehavedie same ) electronegativityC) numberof valenceelectronsB) London dispersionradiusD) ionizationenergyWhat is die atomicnumberof an atomwidi six valenceelectrons?A) 12B) 6C) 8D) 1040)What is die atomicnumberof an atomdiat fonns an ion widi18 electronsand a chqe of2 ?A) 30B) 20C) 18D) 4841)What is die total numberof valenceelectronsin an atomwith a total of 13 protons?A) 1B) 2C) 3D) 442)What is the total numberof valenceelectronsin an atomwith the electronconfiguration2-8-5?A) 15B) 8C) 5D) 2 .43)A Ca2 ion differs from a CaOatomin that the Ca2 ion hasA) fewer electronsC) moreelectronsB) moreprotonsD) fewer protonsWhich of the following is the electron-dotsymbol for an atomwith an electronconfigurationof 2-5?.A) .x.B) .x.C) .x:D) .x:.An atomhasthe electronconfiguration2-8-7. The electron-dotsymbolfor this elementis.A)46)X:.B).x:.C):x:.D)x:D).a:What is the electron-dotsymbolfor a chlorineatomin the groundstate?.A) : CI :.B) : CI :.C) CI:.

6260 - 1 - Page 547)48)D) KC) sB) IA) HWhat causesthe emissionof radiantenergythat producescharacteristicspectra1lines?49)A) ganunaray emissionfrom the nucleusB) movementof electronsto higher energylevelsC) neutronabsorptionby the nucleusD) returnof electronsto lower energylevelsThe characteristicspectra1linesof elementsarecausedwhen electronsin an excitedatommove fromA)B)C)D)50)lower to higher energylevels,releasingenergylower to higher energylevels,absorbingenergyhigherto lower energylevels,releasingenergyhigherto lower f energyoccursasan electronmovesfromA) Is to 3sB) 4dto 4sC) 4sto 3pD) 3pto 3s\51)ElectronX canchangeto a higherenergylevel or a lower energylevel. Which of the followingstatementsis true of electronA7A) ElectronXemits energywhen it changesto a higherenergylevel.B) ElectronXabsorbsenergywhen it changesto a higherenergylevel.C) ElectronX absorbsenergywhen it changesto a lower energylevel.D) ElectronXneither emitsnor absorbsenergywhen it changesenergylevel.52)An atomof which elementin the groundstatehasa completeoutennostshell?A) BeB) HeC) HgD) H53)In an atomthathasan electronconfigurationof2-5, what is the total numberof electronsin itslIiglles/energylevel?A) 8B) 5C) 7D) 254)Which of the following is the electronconfigurationof an atomin the groundstate?A) 2-7-1-1B) 1-8-2C) 2-7-2D) 2-8-155)What is the electronconfigurationof a fluorine atomin the groundstate?A) 1-8B) 2-9C) 2-7D) 2-8-7Which of the following is the electronconfigurationfor Mg2 ions?A) 2-8-2B) 2-8-8C) 2-2D) 2-8What is the electronconfigurationof a calciumion (Ca2 )in the groundstate?A) 2-8-8-1B) 2-8-8-8C) 2-8-8D) 2-8-8-2:56)57)58)What is the electron configuration of an oxygen ion (02-' I in the ground state?A) 2-659)B) 2-8C), 1-7D) 2-4Which electron configuration representsan atom in an excitOOstate?A)2-8-1B)2-7-1C) 2-7D)

-6260 1 - Page 6Which of the following is the electron configuraton of a calcium atom in the excited state?60)61)A)2-8-8-2B)2-8-7-3C)2-4D)2-3-1Which representsthe electronconfiguratonof a silver atomin the excitedstate?A). 2-7-7B)C) 2-8-18-182-8-18-18-1D)2-8-18-17-2An atomof an elementhasth electronconfigurationiJ22.s22p2.What is the total numberof valence62)electronsin this atom?A) 6B) 2C) 5D) 4Which electronconfigurationrepresentsan atomin an excitedstate?A) 1J22J22.z;.63J23p2B) 1J22J22.z;.63J264)66)67)In an atom,the s sublevelhasA) 5 otbitalsC) 1 otbitalB) 7 otbitalsD) 3 otbitalsAn atomhas 8 electronsin a dsublevel. How many dotbitals in this sublevelarehalf-filled?A) 1B) 2C) 3D) 4In which sublevelwould an electronhavethe /iig/ies/energy?A)4/B)4sC) 4dD)4pWhich electronconfigurationcontainsthreehalf-filled otbitals?A)68)C) IJ22J22.z;.63plD) 1J22J22.z;.63J23p11J22J22.tAC)IJ22J22.z;.6B) 1.;2. 2p5D) 1.s.22.s22p?Which electronnotationrepresentsthe valenceelectronsof a phosphorusatomin the groundstate?A)B) [][][]C)'--y-.-IP WJ[1!]f'f1ffTls'---y -Jp.DD) !IIJ[]O" P,.I[I]s ' [111[f1]CJy-.;.-J\I;:; ';;'p

6260 - 1 - Page 769)Which of the following is the omital notation for the electrons in the third principal energy level of anargon atom in the ground ][j-ffJ-Ej3pD) I f:]-E]-i jr5[JWhich omitaI notation representsan atom ofbery umA)15 25r --2p.A"in the71)[iJlib000state?C) 15 25-.A.---"D)1s 2s,-2pA-- 1t][][]DDWhich oJbitalnotationrepresentsan atomin the groundstatewid! 6 valenceelectrons?A)!IJImlmlms'y"C)1ill1m!IJ!IJs 'y---'pB) [illS '---y [ill[illS "'--y---'PWhich diagramcorrectlyrepresentsan atomof fluorine in an excitedstate?B)D)D

6260 - 1 - Page873)The questionsbelow referto an atomof silicon.(a) How many protonsarein the nucleusof a silicon atom?(b 'Write the electronconfigurationfor an atomof silicon in the groundstate.(c) Draw a Lewis electron-dotdiagramfor an atomof silicon.(d) How doesan atomof siliconbecomea Si4- ion?(e) What noblegashasthe sameelectronconfigurationasSi4-?74)The questionsbelow referto a neutralatomin the groundstatehavingthe electronconfiguration2-7.(a) Namethe elementwith this electronconfiguration.(b) How many protonsarecontainedin the nucleusof this atom?(c) How many valenceelectronsdoesthis elementcontain?(d) What principal energylevel do the valenceelectronsoccupy?(e) Write a poSSIbleelectronconfigurationfor this atomin the excitedstate.

-6260 - 1 Page975)The questionsbelow refer to an atomthathas 17 protons,19neutrons,and 17 electrons.(a) What is the atomicnumberof this atom?(b) What is the massnumberof this atom?(c) Write the electronconfigurationfor this atom.(d) Identify the atom.(e) Draw a correctLewis electron-dotdiagramfor the atom.76)Given the following Lewis electron-dotdiagram:.x.Name threeelementsthat couldbe elementX-77)Given the following Lewis electron-dotdiagram:Name IlIree elementsthat couldbe elementX.x.

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6260 - 1 - Page 3 What is the nuclear charge of aD atom with a mass of 23 and an atomic number of 11 ? A) 34 B) 23 C) 12 D) 11 23) 24) 25) 2 27) C) more protons D) fewe