Chemistry -- Terms and Definitions Questions And Answers

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