AQA GCSE CHEMISTRY - CHEMICAL CHANGES
QUESTIONS WITH CORRECT ANSWERS 2025
OxidationN-NCORRECTNANSWERN-LossNofNelectrons
ReductionN-NCORRECTNANSWERN-GainNofNelectrons
DisplacementNreactionN-NCORRECTNANSWERN-
WhenNaNmoreNreactiveNelementNtakesNtheNplaceNofNaNlessNreactiveNelementNinNaNcompound
RedoxNreactionN-NCORRECTNANSWERN-ANreactionNwhereNbothNoxidationNandNreductionNoccur
AcidN-NCORRECTNANSWERN-SubstanceNthatNproducesNhydrogenNionsN(H⁺)NinNwater
AlkaliN-NCORRECTNANSWERN-SubstanceNthatNproducesNhydroxideNionsN(OH⁻)NinNwater
StrongNacidN-NCORRECTNANSWERN-AnNacidNwhichNisNfullyNionisedN(splitNintoNions)NinNwater
WeakNacidN-NCORRECTNANSWERN-AnNacidNinNwhichNonlyNaNfewNmoleculesNareNionised
DiluteN-NCORRECTNANSWERN-ANsolutionNcontainingNaNsmallNamountNofNdissolvedNsolute
ConcentratedN-NCORRECTNANSWERN-ANsolutionNcontainingNaNlotNofNdissolvedNsolute
NeutralisationN-NCORRECTNANSWERN-ReactionNbetweenNanNacidNandNanNalkaliNformingNwater.
IonicNequationNforNneutralisationN-NCORRECTNANSWERN-H⁺(aq)N+NOH⁻(aq)N→NH₂O(l)
AcidN+NBaseN-NCORRECTNANSWERN-→NsaltN+Nwater
QUESTIONS WITH CORRECT ANSWERS 2025
OxidationN-NCORRECTNANSWERN-LossNofNelectrons
ReductionN-NCORRECTNANSWERN-GainNofNelectrons
DisplacementNreactionN-NCORRECTNANSWERN-
WhenNaNmoreNreactiveNelementNtakesNtheNplaceNofNaNlessNreactiveNelementNinNaNcompound
RedoxNreactionN-NCORRECTNANSWERN-ANreactionNwhereNbothNoxidationNandNreductionNoccur
AcidN-NCORRECTNANSWERN-SubstanceNthatNproducesNhydrogenNionsN(H⁺)NinNwater
AlkaliN-NCORRECTNANSWERN-SubstanceNthatNproducesNhydroxideNionsN(OH⁻)NinNwater
StrongNacidN-NCORRECTNANSWERN-AnNacidNwhichNisNfullyNionisedN(splitNintoNions)NinNwater
WeakNacidN-NCORRECTNANSWERN-AnNacidNinNwhichNonlyNaNfewNmoleculesNareNionised
DiluteN-NCORRECTNANSWERN-ANsolutionNcontainingNaNsmallNamountNofNdissolvedNsolute
ConcentratedN-NCORRECTNANSWERN-ANsolutionNcontainingNaNlotNofNdissolvedNsolute
NeutralisationN-NCORRECTNANSWERN-ReactionNbetweenNanNacidNandNanNalkaliNformingNwater.
IonicNequationNforNneutralisationN-NCORRECTNANSWERN-H⁺(aq)N+NOH⁻(aq)N→NH₂O(l)
AcidN+NBaseN-NCORRECTNANSWERN-→NsaltN+Nwater