AQA GCSE CHEMISTRY - PAPER 1 EXAM QUESTIONS WITH CORRECT ANSWERS RATED A+ 2025/2026

AQA GCSE CHEMISTRY - PAPER 1
EXAM QUESTIONS WITH CORRECT
ANSWERS RATED A+ 2025/2026
Whattistthetchargetoftatproton?t-tCORRECTtANSWERSt+1



Whattistthetchargetoftatneutron?t-tCORRECTtANSWERSt0



Whattistthetchargetoftantelectron?t-tCORRECTtANSWERSt-1



Whattistthetrelativetmasstoftatproton?t-tCORRECTtANSWERSt1



Whattistthetrelativetmasstoftatneutron?t-tCORRECTtANSWERSt1



Whattistthetrelativetmasstoftantelectron?t-tCORRECTtANSWERStVerytsmall



Howtmanyttypestoftatomstdotelementstcontain?t-tCORRECTtANSWERStOnlytonettype



Whattaretcompounds?t-
tCORRECTtANSWERStSubstancestcontainingttwotortmoretdifferenttelementstthattaretchemicallytbo


ndedttogether



Whattaretmixtures?t-
tCORRECTtANSWERStSubstancestcontainingttwotortmoretdifferenttelementstthattaretnottchemically


tbondedttogether

,Whattpatterntistformedtfromtcarryingtouttpapertchromatography?t-
tCORRECTtANSWERStChromatogram




Whichtmethodtoftseparationtistusefulttotseparatetantinsolubletsolidtfromtatliquid?t-
tCORRECTtANSWERStFiltration




Whichtmethodtoftseparationtistusefulttotseparatetatsolubletsolidtfromtatliquid?t-
tCORRECTtANSWERStEvaporationtortCrystillisation




Whichtmethodtoftdistillationtseparatestliquidstwithtsimilartboilingtpoints?t-
tCORRECTtANSWERStFractionaltdistillation




Whotdiscoveredtthattthetplumtpuddingtmodeltwastwrong?t-tCORRECTtANSWERStErnesttRutherford



Whotdevisedtantexperimenttthattprovedtthetexistencetoftthetneutron?t-
tCORRECTtANSWERStNielstBohr




WhytdidtMendeleevtleavetgapstinthistTabletoftElements?t-
tCORRECTtANSWERStTotensuretthattelementstwithtsimilartpropertieststayedtintthetsametgroups.tTh


etgapstindicatedtthetexistencetoftundiscoveredtelementstandtallowedtMendeleevttotpredicttwhattt
heirtpropertiestmighttbe



Howtaretthetgrouptnumbertandtthetnumbertoftelectronstintthetoutertshelltoftantelementtrelated?t-
tCORRECTtANSWERStThetgrouptnumberttellstyouthowtmanytelectronstaretintthetoutertshelltoftantele


ment.tE.g.tsodiumtistintGroupt1tthereforetitthast1telectrontontitstoutertshell



Whattkindtoftionstdotmetalstform?t-tCORRECTtANSWERStPositive



Wheretaretthetnon-metalstontthetperiodicttable?t-tCORRECTtANSWERStOntthetrightthandtside

,Givetthreetpropertiestwhichtaretspecificttottransitiontmetalst-
tCORRECTtANSWERSt1)tTheytcantformtmoretthantonetionte.gtcobalttformtCo2+



2)tTheytaretoftentcoloured,tthereforetcompoundstwhichtcontaintthemtaretcolourfulte.g.tpotassiumt
chromatetistyellow

3)tTheytoftentmaketgoodtcatalystste.g.tnickeltbasedtcatalyststaretusedtintthethydrogenationtoftalken
es



StatetthreettrendstastyoutgotdowntGroupt1t-tCORRECTtANSWERSt1)tIncreasedtreactivityt-
tthetoutertelectrontistmoreteasilytlosttastthetattractiontbetweentthetnucleustandtthetelectrontdecre


asestbecausetthetelectrontistfurthertawaytfromtthetnucleus

2)tLowertmeltingtandtboilingtpoints

3)tHighertrelativetatomictmass



WhattaretthetproductstoftthetreactiontoftatGroupt1tmetaltandtwatert-
tCORRECTtANSWERStHydrogentgastandtatmetalthydroxide



E.g.tsodiumt+twatert-->tsodiumthydroxidet+thydrogen



What'stthetdifferencetbetweentthethardnesstoftGroupt1tandttransitiontmetals?t-
tCORRECTtANSWERStTransitiontmetalstaretharder,tdensertandtstrongertthantGroupt1tmetals




What'stthetdifferencetbetweentthetreactivitytoftGroupt1tandttransitiontmetals?t-
tCORRECTtANSWERStGroupt1tmetalstaretmuchtmoretreactivetthanttransitiontmetals




What'stthetdifferencetbetweentthetmeltingtpointstoftGroupt1tandttransitiontmetals?t-
tCORRECTtANSWERStTransitiontmetalsthavethighertmeltingtpointstthantGroupt1tmetals




WhatttrendstoccurtastyoutgotdowntGroupt7?t-tCORRECTtANSWERSt1)tTheytbecometlesstreactivet-
tit'stharderttotgaintantextratelectrontbecausetthetoutertshell'stfurthertfromtthetnucleus

, 2)tTheythavethighertmeltingtandtboilingtpoints

3)tTheythavethighertrelativetatomictmasses



Whattistthetchargetoftthetionstthatthalogenstformtwhenttheytreacttwithtmetals?t-
tCORRECTtANSWERStTheytformtnegativetions




WhattistthettrendtintboilingtpointtastyoutgotdowntGroupt0?t-
tCORRECTtANSWERStThetboilingtpointstincrease




Whattsubatomictparticlestdoestthetnucleustcontain?t-tCORRECTtANSWERStProtonstandtneutrons



Whattistrelativetatomictmass?t-
tCORRECTtANSWERStThetmasstnumbertwhichtrefersttotthetelementtastatwhole




Howtaretpositivetionstformed?t-tCORRECTtANSWERStAtmetaltatomtlosestelectrons



Howtaretnegativetionstformed?t-tCORRECTtANSWERStAtnon-metaltgainstelectrons



Whattistairtatmixturetof?t-
tCORRECTtANSWERStGases,tmainlytnitrogen,toxygen,tcarbontdioxidetandtargon




Whattistcrudetoiltatmixturetof?t-tCORRECTtANSWERStDifferenttlengththydrocarbontmolecules



Howtcantyoutseparatetsubstancestintatmixture?t-tCORRECTtANSWERStChromatography



Whattistsimpletdistillationtusedtfor?t-tCORRECTtANSWERStSeparatingtouttatliquidtfromtatsolution

E.g.tseparatingtpuretwatertfromtseawater