Chemistry -- Terms and Definitions
Questions And Answers
absoluteazeroa-aCORRECTaaANSWER-
thealowestapossibleatemperature;atheatemperatureaatawhichamoleculesaceaseatoavibrate;a-
273.15aC
accuracya-aCORRECTaaANSWER-
theameasureaofahowacloseaaameasurementaisatoatheaactual,aexactavalue
analyticalachemistrya-aCORRECTaaANSWER-
theabranchaofachemistryawhichadealsawithaidentifyingawhichasubstancesaareapresentainamat
erialsaandahowamuchaofaeachaisapresent
aniona-aCORRECTaaANSWER-anaatomaoramoleculeawhichahasaanaoverallanegativeacharge
atoma-aCORRECTaaANSWER-smallestaparticleaofaanaindividualaelement
atomicamassanumbera-aCORRECTaaANSWER-
theanumberaofaprotonsaandaneutronsainaanaatom'sanucleus
atomicamassaunitsa-aCORRECTaaANSWER-
theastandardabyawhichatheamassaofaanaatomaisameasured,aoneaunitaofawhichabeinga1/12aofat
heamassaofaanaatomaofaC-12
atomicanumbera-aCORRECTaaANSWER-theanumberaofaprotonsainaanaatom'sanucleus
biochemistrya-aCORRECTaaANSWER-
theabranchaofachemistryawhichadealsawithatheastudyaofalivingaorganisms
boilingapointa-aCORRECTaaANSWER-
theatemperatureaatawhichaaaliquidamayabeaevaporated
, cathodearaysa-aCORRECTaaANSWER-
theanegativelyachargedaraysaproducedainaaacathodearayatubeaoragasadischargeatube,acomp
osedaofaaabeamaofaelectrons
cationa-aCORRECTaaANSWER-anaatomaoramoleculeawhichahasaanaoverallapositiveacharge
Celsiusa-aCORRECTaaANSWER-
aaunitaofameasuringatemperatureainawhichatheafreezingapointaofawateraisa0adegreesaandathea
boilingapointaofawateraisa100adegrees
centi-a-aCORRECTaaANSWER-metricaprefixameaninga"hundredth"
chemicalachangea-aCORRECTaaANSWER-
changeainawhichaaasubstanceabecomesaaadifferentasubstanceawithadifferentacomposition/pr
operties
chemicalaformulasa-aCORRECTaaANSWER-
symbolicarepresentationsawhichaspecifyatheaelementsapresentainaaacompoundaasawellaasath
earelativeanumbersaofaatomsaofaeachaelementapresent
chemicalapropertiesa-aCORRECTaaANSWER-
propertiesawhichadescribeahowamatterareactsatoachangeaintoaotherachemicallyadifferentasub
stancesahavingadifferentaproperties
chemicalareactiona-aCORRECTaaANSWER-
aachemicalachangearesultingafromaaacollisionabetweenaatomsaoramolecules
Chemistrya-aCORRECTaaANSWER-
theabranchaofascienceathatadealsawithatheastudyaofatheacomposition,astructure,aandaproperti
esaofamatteraandatheachangesawhichamatteraundergoes
chromatographya-aCORRECTaaANSWER-
aatechniqueausedatoaseparateacomponentsaofamixturesabasedaonatheiradifferingasolubilitiesa
orainteractionsawithaaastationaryaliquidaorasolid
compounda-aCORRECTaaANSWER-
aasubstanceawhichacanabeadecomposedabyachemicalameansaintoasimplerasubstances
densitya-aCORRECTaaANSWER-massaperaunitavolumeaofaaasubstance
distillationa-aCORRECTaaANSWER-
meansabyawhichahomogeneousamixturesainaliquidaformamayabeaseparated
electronsa-aCORRECTaaANSWER-
theasubatomic,anegativelyachargedaparticlesawhichasurroundatheanucleusaofaanaatom
Questions And Answers
absoluteazeroa-aCORRECTaaANSWER-
thealowestapossibleatemperature;atheatemperatureaatawhichamoleculesaceaseatoavibrate;a-
273.15aC
accuracya-aCORRECTaaANSWER-
theameasureaofahowacloseaaameasurementaisatoatheaactual,aexactavalue
analyticalachemistrya-aCORRECTaaANSWER-
theabranchaofachemistryawhichadealsawithaidentifyingawhichasubstancesaareapresentainamat
erialsaandahowamuchaofaeachaisapresent
aniona-aCORRECTaaANSWER-anaatomaoramoleculeawhichahasaanaoverallanegativeacharge
atoma-aCORRECTaaANSWER-smallestaparticleaofaanaindividualaelement
atomicamassanumbera-aCORRECTaaANSWER-
theanumberaofaprotonsaandaneutronsainaanaatom'sanucleus
atomicamassaunitsa-aCORRECTaaANSWER-
theastandardabyawhichatheamassaofaanaatomaisameasured,aoneaunitaofawhichabeinga1/12aofat
heamassaofaanaatomaofaC-12
atomicanumbera-aCORRECTaaANSWER-theanumberaofaprotonsainaanaatom'sanucleus
biochemistrya-aCORRECTaaANSWER-
theabranchaofachemistryawhichadealsawithatheastudyaofalivingaorganisms
boilingapointa-aCORRECTaaANSWER-
theatemperatureaatawhichaaaliquidamayabeaevaporated
, cathodearaysa-aCORRECTaaANSWER-
theanegativelyachargedaraysaproducedainaaacathodearayatubeaoragasadischargeatube,acomp
osedaofaaabeamaofaelectrons
cationa-aCORRECTaaANSWER-anaatomaoramoleculeawhichahasaanaoverallapositiveacharge
Celsiusa-aCORRECTaaANSWER-
aaunitaofameasuringatemperatureainawhichatheafreezingapointaofawateraisa0adegreesaandathea
boilingapointaofawateraisa100adegrees
centi-a-aCORRECTaaANSWER-metricaprefixameaninga"hundredth"
chemicalachangea-aCORRECTaaANSWER-
changeainawhichaaasubstanceabecomesaaadifferentasubstanceawithadifferentacomposition/pr
operties
chemicalaformulasa-aCORRECTaaANSWER-
symbolicarepresentationsawhichaspecifyatheaelementsapresentainaaacompoundaasawellaasath
earelativeanumbersaofaatomsaofaeachaelementapresent
chemicalapropertiesa-aCORRECTaaANSWER-
propertiesawhichadescribeahowamatterareactsatoachangeaintoaotherachemicallyadifferentasub
stancesahavingadifferentaproperties
chemicalareactiona-aCORRECTaaANSWER-
aachemicalachangearesultingafromaaacollisionabetweenaatomsaoramolecules
Chemistrya-aCORRECTaaANSWER-
theabranchaofascienceathatadealsawithatheastudyaofatheacomposition,astructure,aandaproperti
esaofamatteraandatheachangesawhichamatteraundergoes
chromatographya-aCORRECTaaANSWER-
aatechniqueausedatoaseparateacomponentsaofamixturesabasedaonatheiradifferingasolubilitiesa
orainteractionsawithaaastationaryaliquidaorasolid
compounda-aCORRECTaaANSWER-
aasubstanceawhichacanabeadecomposedabyachemicalameansaintoasimplerasubstances
densitya-aCORRECTaaANSWER-massaperaunitavolumeaofaaasubstance
distillationa-aCORRECTaaANSWER-
meansabyawhichahomogeneousamixturesainaliquidaformamayabeaseparated
electronsa-aCORRECTaaANSWER-
theasubatomic,anegativelyachargedaparticlesawhichasurroundatheanucleusaofaanaatom