A-level Chemistry Tutor

What came up: June 2025

June 2025 is the latest series the board has released publicly.

The most recent series, question by question. Use it to see which topics carried the six-mark level of response questions and the long calculations, and which were examined only through multiple choice; the six-mark questions page lists every one set.

AS Paper 1 (70 marks)

QTopicMarksType
1Practical skills: planning, analysis and evaluation1Multiple choice
2Electron structure and orbitals1Multiple choice
3Amount of substance (moles)1Multiple choice
4Amount of substance (moles)1Multiple choice
5Atomic structure and isotopes1Multiple choice
6Redox and oxidation numbers1Multiple choice
7Redox and oxidation numbers, Acids, bases and titrations1Multiple choice
8Bonding, structure and shapes of molecules1Multiple choice
9Group 2, Periodicity and ionisation energy1Multiple choice
10Bonding, structure and shapes of molecules1Multiple choice
11Enthalpy changes and Hess’ law1Multiple choice
12Reaction rates and the Boltzmann distribution, Chemical equilibrium and Kc1Multiple choice
13Reaction rates and the Boltzmann distribution, Chemical equilibrium and Kc1Multiple choice
14Organic basics: naming, formulae and isomerism1Multiple choice
15Alkenes, Organic basics: naming, formulae and isomerism1Multiple choice
16Haloalkanes1Multiple choice
17Organic basics: naming, formulae and isomerism, Alcohols1Multiple choice
18Haloalkanes1Multiple choice
19Infrared spectroscopy and mass spectrometry1Multiple choice
20Infrared spectroscopy and mass spectrometry1Multiple choice
21(a)Atomic structure and isotopes2Complete table/diagram
21(b)Atomic structure and isotopes2Calculation
21(c)Periodicity and ionisation energy3Structure / isomer
21(d)(i)Amount of substance (moles)3Calculation
21(d)(ii)Reaction rates and the Boltzmann distribution3Data interpretation
22(a)The halogens, Redox and oxidation numbers3Short answer
22(b)(i)The halogens3Short answer
22(b)(ii)The halogens1Short answer
22(c)The halogens, Qualitative analysis: tests for ions4Short answer
23(a)Chemical equilibrium and Kc2Short answer
23(b)Enthalpy changes and Hess’ law3Calculation
23(c)Chemical equilibrium and Kc3Calculation
24(a)(i)Alkenes, Organic basics: naming, formulae and isomerism1Drawing / labelling
24(a)(ii)Alkenes1Short answer
24(b)Formulae and equations, Alkanes1Equation writing
24(c)(i)Alkenes, Organic basics: naming, formulae and isomerism5Mechanism
24(c)(ii)Alkenes1Short answer
25(a)Alcohols3Structure / isomer
25(b)Alcohols, Organic basics: naming, formulae and isomerism1Structure / isomer
25(c)Amount of substance (moles)5Calculation

AS Paper 2 (70 marks)

Six-mark level of response questions: Group 2, Redox and oxidation numbers, Periodicity and ionisation energy (Q2(a)(ii)); Organic synthesis and practical techniques (Module 4), Practical techniques and apparatus (PAGs), Amount of substance (moles) (Q5(c))

QTopicMarksType
1(a)Acids, bases and titrations1Short answer
1(b)Acids, bases and titrations1Equation writing
1(c)(i)Enthalpy changes and Hess’ law, Amount of substance (moles)4Calculation
1(c)(ii)Enthalpy changes and Hess’ law2Short answer
2(a)(i)Group 2, Periodicity and ionisation energy1Equation writing
2(a)(ii)Group 2, Redox and oxidation numbers, Periodicity and ionisation energy6Level of response
2(b)(i)Amount of substance (moles)2Calculation
2(b)(ii)Practical skills: planning, analysis and evaluation, Amount of substance (moles)2Short answer
2(b)(iii)Practical skills: planning, analysis and evaluation, Amount of substance (moles)1Short answer
3(a)(i)Acids, bases and titrations, Practical techniques and apparatus (PAGs)1Complete table/diagram
3(a)(ii)Acids, bases and titrations1Calculation
3(a)(iii)Acids, bases and titrations, Amount of substance (moles)5Calculation
3(b)Acids, bases and titrations, Practical skills: planning, analysis and evaluation2Short answer
3(c)Alcohols, Alkenes, Organic synthesis and practical techniques (Module 4)2Structure / isomer
4(a)Alkanes4Data interpretation
4(b)(i)Alkanes1Equation writing
4(b)(ii)Enthalpy changes and Hess’ law, Amount of substance (moles)2Calculation
4(b)(iii)Enthalpy changes and Hess’ law2Complete table/diagram
4(b)(iv)Enthalpy changes and Hess’ law, Organic basics: naming, formulae and isomerism1Data interpretation
4(c)Organic basics: naming, formulae and isomerism2Structure / isomer
4(d)(i)Alkanes1Equation writing
4(d)(ii)Organic basics: naming, formulae and isomerism1Short answer
4(d)(iii)Alkanes, Organic basics: naming, formulae and isomerism2Mechanism
4(d)(iv)Alkanes1Short answer
5(a)(i)Bonding, structure and shapes of molecules1Drawing / labelling
5(a)(ii)Bonding, structure and shapes of molecules, Alkanes2Short answer
5(b)Alkenes, Bonding, structure and shapes of molecules3Short answer
5(c)Organic synthesis and practical techniques (Module 4), Practical techniques and apparatus (PAGs), Amount of substance (moles)6Level of response
5(d)(i)Organic synthesis and practical techniques (Module 4), Alkenes, Haloalkanes3Structure / isomer
5(d)(ii)Haloalkanes1Short answer
6(a)(i)Infrared spectroscopy and mass spectrometry2Drawing / labelling
6(a)(ii)Infrared spectroscopy and mass spectrometry1Short answer
6(b)(i)Infrared spectroscopy and mass spectrometry1Short answer
6(b)(ii)Infrared spectroscopy and mass spectrometry, Organic synthesis and practical techniques (Module 4)2Short answer

Paper 1 (100 marks)

Six-mark level of response questions: Bonding, structure and shapes of molecules (Q16(d)); Acids, bases, pH and buffers, Amount of substance (moles) (Q19(c))

QTopicMarksType
1Atomic structure and isotopes1Multiple choice
2Amount of substance (moles)1Multiple choice
3Lattice enthalpy and Born–Haber cycles1Multiple choice
4Acids, bases and titrations, Amount of substance (moles)1Multiple choice
5Reaction rates and the Boltzmann distribution1Multiple choice
6Enthalpy changes and Hess’ law1Multiple choice
7Bonding, structure and shapes of molecules, The halogens1Multiple choice
8Practical skills: planning, analysis and evaluation1Multiple choice
9Rates: orders, rate equations and the Arrhenius equation1Multiple choice
10Redox titrations and electrode potentials1Multiple choice
11Redox titrations and electrode potentials1Multiple choice
12Rates: orders, rate equations and the Arrhenius equation1Multiple choice
13Acids, bases, pH and buffers1Multiple choice
14Group 21Multiple choice
15Transition elements, Redox and oxidation numbers1Multiple choice
16(a)(i)Periodicity and ionisation energy2Complete table/diagram
16(a)(ii)Periodicity and ionisation energy3Short answer
16(b)(i)Periodicity and ionisation energy1Equation writing
16(b)(ii)Periodicity and ionisation energy2Short answer
16(c)The halogens, Formulae and equations3Equation writing
16(d)Bonding, structure and shapes of molecules6Level of response
17(a)(i)Enthalpy changes and Hess’ law1Short answer
17(a)(ii)Enthalpy changes and Hess’ law2Calculation
17(a)(iii)Entropy and free energy2Short answer
17(a)(iv)Entropy and free energy2Calculation
17(b)Entropy and free energy3Calculation
17(c)(i)Equilibrium constants Kc and Kp1Short answer
17(c)(ii)Equilibrium constants Kc and Kp3Calculation
17(c)(iii)Equilibrium constants Kc and Kp2Short answer
18(a)(i)Reaction rates and the Boltzmann distribution1Short answer
18(a)(ii)Reaction rates and the Boltzmann distribution2Short answer
18(a)(iii)Reaction rates and the Boltzmann distribution1Short answer
18(b)Rates: orders, rate equations and the Arrhenius equation5Calculation
18(c)(i)Rates: orders, rate equations and the Arrhenius equation1Complete table/diagram
18(c)(ii)Rates: orders, rate equations and the Arrhenius equation, Practical skills: planning, analysis and evaluation4Calculation
19(a)Acids, bases, pH and buffers1Calculation
19(b)(i)Acids, bases, pH and buffers, Acids, bases and titrations2Short answer
19(b)(ii)The halogens, Redox and oxidation numbers3Data interpretation
19(c)Acids, bases, pH and buffers, Amount of substance (moles)6Level of response
20(a)(i)Redox titrations and electrode potentials, Practical techniques and apparatus (PAGs)4Drawing / labelling
20(a)(ii)Redox titrations and electrode potentials1Calculation
20(b)Redox titrations and electrode potentials4Short answer
21(a)(i)Transition elements2Short answer
21(a)(ii)Transition elements, Qualitative analysis: tests for ions2Short answer
21(b)(i)Transition elements1Short answer
21(b)(ii)Amount of substance (moles), Transition elements4Data interpretation
21(c)Transition elements2Structure / isomer
21(d)(i)Redox titrations and electrode potentials, Amount of substance (moles)5Calculation
21(d)(ii)Transition elements, Redox titrations and electrode potentials1Short answer

Paper 2 (100 marks)

Six-mark level of response questions: Organic synthesis and practical techniques (Module 4), Amount of substance (moles), Alcohols, Haloalkanes (Q17); Infrared spectroscopy and mass spectrometry, NMR spectroscopy and combined techniques (Q23(b))

QTopicMarksType
1Organic basics: naming, formulae and isomerism1Multiple choice
2Alkenes, Amount of substance (moles)1Multiple choice
3Organic basics: naming, formulae and isomerism, Amount of substance (moles)1Multiple choice
4Organic synthesis and practical techniques (Module 4), Practical techniques and apparatus (PAGs), Alcohols1Multiple choice
5Carboxylic acids, esters and acyl chlorides, Amount of substance (moles)1Multiple choice
6Amount of substance (moles)1Multiple choice
7Polyesters and polyamides, Amines, Amino acids, amides and chirality1Multiple choice
8Alkenes1Multiple choice
9Carboxylic acids, esters and acyl chlorides1Multiple choice
10Amino acids, amides and chirality, Alkenes1Multiple choice
11Infrared spectroscopy and mass spectrometry1Multiple choice
12Infrared spectroscopy and mass spectrometry, Haloalkanes1Multiple choice
13Alcohols1Multiple choice
14Organic synthesis (Module 6), Alkenes, Alcohols1Multiple choice
15NMR spectroscopy and combined techniques1Multiple choice
16(a)Organic basics: naming, formulae and isomerism1Short answer
16(b)Alkanes, Amount of substance (moles), Organic basics: naming, formulae and isomerism, Alkenes3Complete table/diagram
16(c)(i)Alkenes2Structure / isomer
16(c)(ii)Alkenes2Short answer
16(d)Alkanes, Formulae and equations1Equation writing
16(e)Alkenes3Complete table/diagram
17Organic synthesis and practical techniques (Module 4), Amount of substance (moles), Alcohols, Haloalkanes6Level of response
18(a)Polyesters and polyamides, Alkenes4Structure / isomer
18(b)(i)Alkenes1Short answer
18(b)(ii)Polyesters and polyamides, Alkenes1Structure / isomer
18(c)Carboxylic acids, esters and acyl chlorides2Complete table/diagram
19(a)(i)Carbon–carbon bond formation, Organic basics: naming, formulae and isomerism, Haloalkanes3Mechanism
19(a)(ii)Carbon–carbon bond formation, Haloalkanes1Short answer
19(b)(i)Alcohols1Short answer
19(b)(ii)Organic synthesis and practical techniques (Module 4), Practical skills: planning, analysis and evaluation, Practical techniques and apparatus (PAGs)4Short answer
20(a)Aromatic compounds: benzene and phenol2Short answer
20(b)(i)Aromatic compounds: benzene and phenol3Data interpretation
20(b)(ii)Aromatic compounds: benzene and phenol2Equation writing
20(c)(i)Aromatic compounds: benzene and phenol, Carbon–carbon bond formation1Short answer
20(c)(ii)Aromatic compounds: benzene and phenol5Mechanism
20(c)(iii)Aromatic compounds: benzene and phenol2Structure / isomer
20(c)(iv)Amines, Formulae and equations2Complete table/diagram
21(a)Organic basics: naming, formulae and isomerism1Short answer
21(b)Carbonyl compounds: aldehydes and ketones, Chromatography and tests for functional groups2Short answer
21(c)Carbonyl compounds: aldehydes and ketones, Carboxylic acids, esters and acyl chlorides, Chromatography and tests for functional groups3Complete table/diagram
21(d)Carbonyl compounds: aldehydes and ketones4Mechanism
21(e)Carboxylic acids, esters and acyl chlorides, Carbonyl compounds: aldehydes and ketones7Short answer
22(a)(i)Chromatography and tests for functional groups1Short answer
22(a)(ii)Amino acids, amides and chirality, Chromatography and tests for functional groups2Drawing / labelling
22(b)(i)Organic synthesis (Module 6)2Structure / isomer
22(b)(ii)Organic synthesis (Module 6), Amino acids, amides and chirality1Short answer
23(a)Infrared spectroscopy and mass spectrometry, Organic basics: naming, formulae and isomerism, Alcohols, NMR spectroscopy and combined techniques4Short answer
23(b)Infrared spectroscopy and mass spectrometry, NMR spectroscopy and combined techniques6Level of response

Paper 3 (70 marks)

Six-mark level of response questions: Rates: orders, rate equations and the Arrhenius equation (Q3(b)); Enthalpy changes and Hess’ law, Amount of substance (moles) (Q6)

QTopicMarksType
1(a)(i)Atomic structure and isotopes2Complete table/diagram
1(a)(ii)Atomic structure and isotopes3Short answer
1(b)NMR spectroscopy and combined techniques3Short answer
2(a)(i)Organic basics: naming, formulae and isomerism1Structure / isomer
2(a)(ii)Amount of substance (moles)3Calculation
2(b)(i)Aromatic compounds: benzene and phenol, Chromatography and tests for functional groups1Short answer
2(b)(ii)Amount of substance (moles)4Calculation
2(c)Acids, bases, pH and buffers, Amount of substance (moles)5Calculation
3(a)Chemical equilibrium and Kc, Practical skills: planning, analysis and evaluation, Equilibrium constants Kc and Kp5Calculation
3(b)Rates: orders, rate equations and the Arrhenius equation6Level of response
4(a)(i)Redox and oxidation numbers1Short answer
4(a)(ii)Redox titrations and electrode potentials, Redox and oxidation numbers, The halogens, Qualitative analysis: tests for ions7Short answer
4(a)(iii)Redox titrations and electrode potentials, Transition elements2Equation writing
4(b)(i)Amount of substance (moles)1Short answer
4(b)(ii)Transition elements, Amino acids, amides and chirality3Structure / isomer
4(b)(iii)Transition elements1Complete table/diagram
5(a)(i)Organic basics: naming, formulae and isomerism, Aromatic compounds: benzene and phenol1Short answer
5(a)(ii)Amount of substance (moles)4Calculation
5(a)(iii)Haloalkanes1Short answer
5(a)(iv)Organic basics: naming, formulae and isomerism, Organic synthesis (Module 6)4Mechanism
5(a)(v)Carbonyl compounds: aldehydes and ketones, Acids, bases, pH and buffers1Short answer
5(b)Bonding, structure and shapes of molecules2Drawing / labelling
5(c)(i)Redox titrations and electrode potentials1Calculation
5(c)(ii)Redox titrations and electrode potentials2Equation writing
6Enthalpy changes and Hess’ law, Amount of substance (moles)6Level of response

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