AQA GCSE CHEMISTRY KEY WORDS QUESTIONS WITH CORRECT ANSWERS 2025

AQA GCSE CHEMISTRY KEY WORDS
QUESTIONS WITH CORRECT ANSWERS 2025
AccurateN-NCORRECTNANSWERN-
ANmeasurementNisNconsideredNaccurateNifNitNisNjudgedNtoNbeNcloseNtoNtheNtrueNvalue.



AcidN-NCORRECTNANSWERN-
WhenNdissolvedNinNwater,NitsNsolutionNhasNaNpHNvalueNlessNthanN7.NAcidsNareNprotonN(H+Nion)Ndonors.



ActivationNenergyN-NCORRECTNANSWERN-TheNminimumNenergyNneededNforNaNreactionNtoNtakeNplace.



AkaliNmetalN-NCORRECTNANSWERN-ElementsNinNGroupN1NofNtheNperiodicNtable.



AlkaliN-NCORRECTNANSWERN-ItsNsolutionNhasNaNpHNvalueNmoreNthanN7.



AlkaneN-NCORRECTNANSWERN-
SaturatedNhydrocarbonNwithNtheNgeneralNformulaNCnH2n+2,NforNexample,Nmethane,Nethane,NandNpropan
e.



AlkeneN-NCORRECTNANSWERN-UnsaturatedNhydrocarbonNwhichNcontainsNaNcarbon-
carbonNdoubleNbond.NItsNgeneralNformulaNisNCnH2n,NforNexample,Nethene,NC2H4.



AlloyN-NCORRECTNANSWERN-ANmixtureNofNtwoNorNmoreNelements,NatNleastNoneNofNwhichNisNaNmetal.



AnhydrousN-NCORRECTNANSWERN-DescribesNaNsubstanceNthatNdoesNnotNcontainNwater.



AnodeN-NCORRECTNANSWERN-TheNpositiveNelectrodeNinNelectrolysis.



AnomaliesN-NCORRECTNANSWERN-
ResultsNthatNdoNnotNmatchNtheNpatternNseenNinNtheNotherNdataNcollectedNorNareNwellNoutsideNtheNrangeNo
fNotherNrepeatNreadingsN(outliers).

,AqueousNsolutionN-NCORRECTNANSWERN-TheNmixtureNmadeNbyNaddingNaNsolubleNsubstanceNtoNwater.



AtmosphereN-NCORRECTNANSWERN-TheNrelativelyNthinNlayerNofNgasesNthatNsurroundNplanetNEarth.



AtomN-NCORRECTNANSWERN-
TheNsmallestNpartNofNanNelementNthatNcanNstillNbeNrecognisedNasNthatNelement.



AtomN-NCORRECTNANSWERN-
ANmeasureNofNtheNamountNofNstartingNmaterialsNthatNendNupNasNusefulNproducts.



AtomicNnumberN-NCORRECTNANSWERN-
TheNnumberNofNprotonsN(whichNequalsNtheNnumberNofNelectrons)NinNanNatom.NItNisNsometimesNcalledNtheN
protonNnumber.



AvagadroNconstantN-NCORRECTNANSWERN-
TheNnumberNofNatoms,Nmolecules,NorNionsNinNaNmoleNofNanyNsubstanceN(i.e.,N6.02N×N1023NperNmol).



BalancedNsymbolNequationN-NCORRECTNANSWERN-
ANsymbolNequationNinNwhichNthereNareNequalNnumbersNofNeachNtypeNofNatomNonNeitherNsideNofNtheNequat
ion.



BaseN-NCORRECTNANSWERN-
TheNoxide,Nhydroxide,NorNcarbonateNofNaNmetalNthatNwillNreactNwithNanNacid,NformingNaNsaltNasNoneNofNthe
Nproducts.N(IfNaNbaseNdissolvesNinNwaterNitNisNcalledNanNalkali).NBasesNareNprotonN(H+Nion)Nacceptors.




BiodegradableN-NCORRECTNANSWERN-MaterialsNthatNcanNbeNbrokenNdownNbyNmicroorganisms.



BiofuelN-NCORRECTNANSWERN-FuelNmadeNfromNanimalNorNplantNproducts.



BlastNfurnaceN-NCORRECTNANSWERN-
TheNhugeNreactionNvesselsNusedNinNindustryNtoNextractNironNfromNitsNore.

, BondNenergyN-NCORRECTNANSWERN-TheNenergyNrequiredNtoNbreakNaNspecificNchemicalNbond.



BuretteN-NCORRECTNANSWERN-
ANlongNglassNtubeNwithNaNtapNatNoneNendNandNmarkingsNtoNshowNvolumesNofNliquid;NusedNtoNaddNprecisely
NknownNvolumesNofNliquidsNtoNaNsolutionNinNaNconicalNflaskNbelowNit.




CarbonNfootprintN-NCORRECTNANSWERN-
TheNtotalNamountNofNcarbonNdioxideNandNotherNgreenhouseNgasesNemittedNoverNtheNfullNlifeNcycleNofNaNpr
oduct,NserviceNorNevent.



CategoricNvariableN-NCORRECTNANSWERN-
CategoricNvariablesNhaveNvaluesNthatNareNlabels.NForNexampleNtypesNofNmaterial.



CatalystN-NCORRECTNANSWERN-
ANsubstanceNthatNspeedsNupNaNchemicalNreactionNbyNprovidingNaNdifferentNpathwayNforNtheNreactionNthatN
hasNaNlowerNactivationNenergy.NTheNcatalystNisNchemicallyNunchangedNatNtheNendNofNtheNreaction.



CatalyticNconverterN-NCORRECTNANSWERN-FittedNtoNexhaustsNofNvehiclesNtoNreduceNpollutantsNreleased.



CathodeN-NCORRECTNANSWERN-TheNnegativeNelectrodeNinNelectrolysis.



CeramicsN-NCORRECTNANSWERN-
MaterialsNmadeNbyNheatingNclay,NorNotherNcompounds,NtoNhighNtemperaturesN(calledNfiring)NtoNmakeNhard
,NbutNoftenNbrittle,Nmaterials,NwhichNmakeNexcellentNelectricalNinsulators.



ChromatographyN-NCORRECTNANSWERN-
TheNprocessNwherebyNsmallNamountsNofNdissolvedNsubstancesNareNseparatedNbyNrunningNaNsolventNalongN
aNmaterialNsuchNasNabsorbentNpaper.



ClimateNchangeN-NCORRECTNANSWERN-
TheNchangeNinNglobalNweatherNpatternsNthatNcouldNbeNcausedNbyNexcessNlevelsNofNgreenhouseNgasesNinNth
eNatmosphere.