CHEMISTRY FINAL ACS EXAM QUESTIONS WITH
DETAILED CORRECT ANSWERS
Accuracy?T-
TCORRECTTANSWERSClosenessTofTmeasurementsTtoTtheTTRUETVALUETofTwhatTisTbeingTmeasured
Precision?T-TCORRECTTANSWERSClosenessTofTaTSETTofTmeasurements
HowTdoTyouTcalculateTPercentTError?T-TCORRECTTANSWERSITexperimental-acceptedTI
____________________TxT100T
acceptedTvalue
T
AreTzerosTinfrontTofTnon-zeroTdigisTsignificant?T-TCORRECTTANSWERSNope!T
ex:T0.0071TisTonlyT2TsigTfigs
AreTzerosTatTtheTendTofTaTnumberTandTtoTtheTrightTofTtheTdecimalTsignificant?T-
TCORRECTTANSWERSYep!T
ex:T9.100TisT4TsigTfigs
Addition/SubtractionTinTregardsTtoTsigTfigs?T-
TCORRECTTANSWERSRoundTnumbersTtoTtheTleastTnumberTofTdecimalTplaces
Multiplaction/DivisionTinTregardsTtoTsigTfigs?T-
TCORRECTTANSWERSRoundTanswersTtoTtheTleastTamountTofTsigTfigs
#TofTe-TequalT-TCORRECTTANSWERStheT#TofTp+
, AtomicTMass?T-
TCORRECTTANSWERSNumberTofTprotonsTinTtheTnucleusT(numberTonTtheTleftTbottomTcornerTofTtheT
chemicalTsymbol)
AtomicTMassTNumber?T-
TCORRECTTANSWERSNumberTofTprotonsTandTneutronsT(numberTonTtheTleftTupperTcornerTofTtheTch
emicalTsymbol)
Isotope?T-
TCORRECTTANSWERSAtomsTofTtheTsameTelement,TbutTwithTdifferentTmassesT(differentTnumberTofT
neutrons)
STUDYTELECTRONTCONFIGURATIONST-TCORRECTTANSWERSSTUDYTELECTRONTCONFIGURATIONS
DoTcolumnsTorTrowsTinTtheTPeriodicTTableThaveTsimilarTpatterns?T-
TCORRECTTANSWERSColumnsT(theT"groups")ThaveTrepeatingTpatterns?
WhichTareaTofTtheTPeriodicTTableThasTgreaterTmetallicness?T-
TCORRECTTANSWERSLeftTandTdownThasTgreaterTmetallicness
WhichTareaTofTtheTPTThasTgreaterTatomicTsize?T-
TCORRECTTANSWERSLeftTandTdownThasTaTgreaterTatomicTsize
WhichTareaTofTtheTPTThasTgreaterTionizationTenergy?T-
TCORRECTTANSWERSRightTsideTandTupThasTgreaterTionizationTenergy
WhichTareaTofTtheTPTThasTgreaterTelectronegativity?T-
TCORRECTTANSWERSRightTsideTandTupThasTgreaterTelectronegativiy,TexceptTtheTNobleTGasesTofT0Te
lectronegativy
DETAILED CORRECT ANSWERS
Accuracy?T-
TCORRECTTANSWERSClosenessTofTmeasurementsTtoTtheTTRUETVALUETofTwhatTisTbeingTmeasured
Precision?T-TCORRECTTANSWERSClosenessTofTaTSETTofTmeasurements
HowTdoTyouTcalculateTPercentTError?T-TCORRECTTANSWERSITexperimental-acceptedTI
____________________TxT100T
acceptedTvalue
T
AreTzerosTinfrontTofTnon-zeroTdigisTsignificant?T-TCORRECTTANSWERSNope!T
ex:T0.0071TisTonlyT2TsigTfigs
AreTzerosTatTtheTendTofTaTnumberTandTtoTtheTrightTofTtheTdecimalTsignificant?T-
TCORRECTTANSWERSYep!T
ex:T9.100TisT4TsigTfigs
Addition/SubtractionTinTregardsTtoTsigTfigs?T-
TCORRECTTANSWERSRoundTnumbersTtoTtheTleastTnumberTofTdecimalTplaces
Multiplaction/DivisionTinTregardsTtoTsigTfigs?T-
TCORRECTTANSWERSRoundTanswersTtoTtheTleastTamountTofTsigTfigs
#TofTe-TequalT-TCORRECTTANSWERStheT#TofTp+
, AtomicTMass?T-
TCORRECTTANSWERSNumberTofTprotonsTinTtheTnucleusT(numberTonTtheTleftTbottomTcornerTofTtheT
chemicalTsymbol)
AtomicTMassTNumber?T-
TCORRECTTANSWERSNumberTofTprotonsTandTneutronsT(numberTonTtheTleftTupperTcornerTofTtheTch
emicalTsymbol)
Isotope?T-
TCORRECTTANSWERSAtomsTofTtheTsameTelement,TbutTwithTdifferentTmassesT(differentTnumberTofT
neutrons)
STUDYTELECTRONTCONFIGURATIONST-TCORRECTTANSWERSSTUDYTELECTRONTCONFIGURATIONS
DoTcolumnsTorTrowsTinTtheTPeriodicTTableThaveTsimilarTpatterns?T-
TCORRECTTANSWERSColumnsT(theT"groups")ThaveTrepeatingTpatterns?
WhichTareaTofTtheTPeriodicTTableThasTgreaterTmetallicness?T-
TCORRECTTANSWERSLeftTandTdownThasTgreaterTmetallicness
WhichTareaTofTtheTPTThasTgreaterTatomicTsize?T-
TCORRECTTANSWERSLeftTandTdownThasTaTgreaterTatomicTsize
WhichTareaTofTtheTPTThasTgreaterTionizationTenergy?T-
TCORRECTTANSWERSRightTsideTandTupThasTgreaterTionizationTenergy
WhichTareaTofTtheTPTThasTgreaterTelectronegativity?T-
TCORRECTTANSWERSRightTsideTandTupThasTgreaterTelectronegativiy,TexceptTtheTNobleTGasesTofT0Te
lectronegativy
