APChemistryTest–Chapters1-3

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1、APChemistryTest–Chapters1-3(2007)Name_______________________________Answereachofthefollowinginthespaceprovided.1.Writeeachofthefollowingmeasurementsinscientificnotation.A.22400km____________________________B.0.04540g____________________________C.7200000s_______

2、_____________________D.0.000400L____________________________2.Solvethefollowing.Writetheanswertothecorrectnumberofsignificantfigures.A.5.4003+3567.981=__________________________B.(4.0x10-6)(3.93x108)=___________________________3.Calculatethevolume,inliters,ofar

3、ectangularbarwhichmeasures0.10mlong,2.0cmthick,and40.0mmwide.4.Abullet,ofdensity5.40g/cm3andamassof80.0g,isdroppedintoagraduatedcylindercontainingexactly50.0mLofwater.Towhatheightwillthewaterlevelriseinthecylinder?5.Contrastthetermsprecisionandaccuracyastheyapp

4、lytoexperimentalresults.6.Manganesemakesup1.3x10-4percentbymassoftheelementsfoundinanormalhealthybody.Howmanygramsofmanganesewouldbefoundinthebodyofapersonweighing183lb?(2.2lb=1.0kg)7.Ahomogeneousmixtureisalsocalleda______________________________.8.Explainthema

5、indifferencesbetweenamixtureandacompound.Giveanexampleofeach.9.Howmanyprotons,neutronsandelectronsarein127I-?10.Convert32.9degreesCelsiustoKelvin.______________________11.WhatisthemasspercentofoxygeninCH3OH?12.Naturallyoccurringargonhasthreeisotopes,theatomsofw

6、hichoccurinthefollowingabundances:0.34%36Ar,0.07%38Ar,99.59%40Ar.Calculatetheaverageatomicweightofargonfromthesedata.13.Asampleofammonia(NH3)hasamassof56.6grams.Howmanymoleculesareinthesample?14.Whatisthemassofoneatomofcopperingrams?15.A.Asubstancecontains35.0g

7、nitrogen,5.05gofhydrogen,and60.0gofoxygen.Howmanygramsofhydrogenarethereina185gsampleofthesubstance?B.WhatfundamentallawofchemistrydidyouapplytoanswerpartA?16.Matcheachscientisttohisaccomplishment._____AntoineLavoisierA.solidspheremodeloftheatom_____AmadeoAvoga

8、droB.measuredtherelationshipbetweenpressureandvolumeofgases_____RobertMillikanC.nuclearmodeloftheatom_____RobertBoyleD.verifiedthelawofconservationofmass_____JohnDaltonE.sus