AQA A-LEVEL CHEMISTRY PAST PAPER
QUESTIONS AND ANSWERS UPDATED 2025 -
2026
The,sample,is,bombarded,with,high,energy,electrons,and,knocks,out,an,electron,forming,1+,rubidium,ions
,through,using,an,electron,gun.,,,ANS,-
Explain,how,the,gaseous,atoms,of,rubidium,are,ionized,in,a,mass,spectrometer(2)
Rb(g)---Rb+(g)+e(-),,,ANS,-
Write,an,equation,,including,state,symbols,,to,show,the,process,that,occurs,when,the,first,ionization,ener
gy,of,rubidium,is,measured(1
1),Shake,the,final,solution,in,the,flask.
2)Ensure,the,bottom,of,the,(liquid)meniscus,is,on,the,graduation,mark.
3)Wash,the,wet,rod,into,the,flask.,,,ANS,-
Read,the,following,instructions,that,describe,how,to,make,up,a,standard,solution,of,a,solid,in,a,volumetric
,flask.,
Answer,the,questions,which,follow.
"Take,a,clean,250cm3,volumetric,flask.,Use,the,balance,provided,and,a,clean,,dry,container,,to,weigh,out,t
he,amount,of,solid,required.,
Tip,the,solid,into,a,clean,,dry,250cm3,beaker,and,add,about,100cm3,of,distilled,water.,
Use,a,stirring,rod,to,help,the,solid,dissolve,,carefully,breaking,up,any,lumps,of,slid,with,the,rod.,
When,the,solid,has,dissolved,,pour,the,solution,into,the,flask,using,a,filter,funnel.,
Add,water,to,the,flask,until,the,level,rises,to,the,graduation,mark"
SUGGEST,THREE,FURTHER,INSTRUCTIONS,WHICH,WOULD,IMPROVE,THE,OVERALL,TECHNIQUE,IN,THIS,AC
COUNT.(3)
Cu2(OH)2CO3+4HCL---2CuCl2+3H20+CO2,,,ANS,-Compounds,containing,Cu2+,,OH-,and,CO3(2-
),ions,are,sometimes,described,as,basic,copper,carbonates
(a),Solid,Cu(OH)2CO3,is,added,to,an,excess,of,dilute,hydrochloric,acid.,A,solution,of,copper(2)chloride,is,f
ormed,,together,with,two,other,products.
QUESTIONS AND ANSWERS UPDATED 2025 -
2026
The,sample,is,bombarded,with,high,energy,electrons,and,knocks,out,an,electron,forming,1+,rubidium,ions
,through,using,an,electron,gun.,,,ANS,-
Explain,how,the,gaseous,atoms,of,rubidium,are,ionized,in,a,mass,spectrometer(2)
Rb(g)---Rb+(g)+e(-),,,ANS,-
Write,an,equation,,including,state,symbols,,to,show,the,process,that,occurs,when,the,first,ionization,ener
gy,of,rubidium,is,measured(1
1),Shake,the,final,solution,in,the,flask.
2)Ensure,the,bottom,of,the,(liquid)meniscus,is,on,the,graduation,mark.
3)Wash,the,wet,rod,into,the,flask.,,,ANS,-
Read,the,following,instructions,that,describe,how,to,make,up,a,standard,solution,of,a,solid,in,a,volumetric
,flask.,
Answer,the,questions,which,follow.
"Take,a,clean,250cm3,volumetric,flask.,Use,the,balance,provided,and,a,clean,,dry,container,,to,weigh,out,t
he,amount,of,solid,required.,
Tip,the,solid,into,a,clean,,dry,250cm3,beaker,and,add,about,100cm3,of,distilled,water.,
Use,a,stirring,rod,to,help,the,solid,dissolve,,carefully,breaking,up,any,lumps,of,slid,with,the,rod.,
When,the,solid,has,dissolved,,pour,the,solution,into,the,flask,using,a,filter,funnel.,
Add,water,to,the,flask,until,the,level,rises,to,the,graduation,mark"
SUGGEST,THREE,FURTHER,INSTRUCTIONS,WHICH,WOULD,IMPROVE,THE,OVERALL,TECHNIQUE,IN,THIS,AC
COUNT.(3)
Cu2(OH)2CO3+4HCL---2CuCl2+3H20+CO2,,,ANS,-Compounds,containing,Cu2+,,OH-,and,CO3(2-
),ions,are,sometimes,described,as,basic,copper,carbonates
(a),Solid,Cu(OH)2CO3,is,added,to,an,excess,of,dilute,hydrochloric,acid.,A,solution,of,copper(2)chloride,is,f
ormed,,together,with,two,other,products.
