CCEA GCSE · Analysis & Prediction

2023 CCEA GCSE Chemistry 1110 Past Paper: Analysis & Answers

A comprehensive assessment across CCEA GCSE Chemistry comprising Unit 1 (80 marks), Unit 2 (100 marks), and Unit 3 Practical Skills (Booklet A: 30 marks, Booklet B: 70 marks, total 280 marks). The papers offer balanced coverage across fundamental principles, organic pathways, equilibria, quantitative stoichiometry, and laboratory-based practical skills.

Updated: 31 Aug 2026

Analysis Sample paper

Difficulty 3.4/5

Total marks

280

Duration

345 mins

Most tested

Quantitative Chemistry & Titration Stoichiometry

Paper breakdown

Unit 1: Higher Tier (GCM12): 80 marks · 75 minsUnit 2: Higher Tier (GCM22): 100 marks · 90 minsUnit 3: Practical Skills Booklet A (GCM33): 30 marks · 120 minsUnit 3: Practical Skills Practical Booklet B (GCM34): 70 marks · 60 mins

Top chapters

Quantitative chemistry (Unit 2) · 36 marksOrganic chemistry · 29 marksChemical analysis · 28 marksElectrochemistry · 25 marksMetals and reactivity series · 25 marks

Overall Examination Verdict

The 2023 CCEA GCSE Chemistry suite presents a thorough and rigorous assessment across all four components (Unit 1, Unit 2, Unit 3 Booklet A, and Unit 3 Booklet B). The overall difficulty sits at a standard Higher Tier level (3.4 / 5.0). Accessibility is well-graded, providing solid baseline recall marks alongside demanding multi-step quantitative calculations, balanced ionic and half-equations, and synoptic 6-mark extended writing tasks (QWC).

Where the Marks Are Distributed

Marks are heavily anchored in core chemical foundations and analytical applications:

Organic Chemistry & Energy Changes (Unit 2): Substantial mark allocation dedicated to homologous series, reaction profiles, bond energy calculations (\(\Delta H\)), and carboxylic acid/alcohol chemistry.
Quantitative Stoichiometry (Units 1, 2 & 3): High weighting across empirical formula derivations, reacting mass calculations, gas volume stoichiometry (molar gas volume \(24\text{ dm}^3\) and Avogadro's law), and multi-step titration/water of crystallisation determination.
Reactivity, Redox & Electrochemistry: Extensive testing of ionic displacement, sacrificial protection, molten and aqueous electrolysis half-equations, and Le Châtelier's principle.
Practical Skills (Unit 3A & 3B): Practical manipulation, recording tables to 1 decimal place, concordancy in titres (within \(0.2\text{ cm}^3\)), flame tests, cation/anion precipitation schemes, and mass-loss rate monitoring.

Key Pitfalls and Marking Vulnerabilities

Examiners routinely penalise omission of state symbols in designated balanced equations, failure to specify 'per unit time' or 'frequency' in collision theory explanations, and misidentifying charge balancing in ionic half-equations (such as placing electrons on the wrong side of oxidation reactions). In practical titration calculations, students frequently forget scaling factors between 25.0 cm\(^3\) aliquots and 250 cm\(^3\) volumetric flasks.

Preparation Strategy & Outlook

Candidates must drill systematic multi-step mole calculations, practice drawing fully labelled apparatus diagrams (such as crucible heating on a pipeclay triangle and tripod), and master qualitative inorganic test flowcharts for cations, anions, and gases.

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Charts

Marks by chapter

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Question type mix

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Short Answer / Identification52 marks · 38 questions
Calculations & Data Processing64 marks · 22 questions
Chemical & Half Equations42 marks · 16 questions
Structured Explanations58 marks · 24 questions
Extended Writing (QWC 6-markers)18 marks · 3 questions
Practical Measurement & Data Tables46 marks · 6 questions

Mark accessibility

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79%within easy or medium reach

128

easy: 92 marksmedium: 128 markshard: 60 marks

Command word frequency

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Skill weighting

Shows the skill mix this paper tested most heavily.

Study ROI

Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.

Titration Stoichiometry & Water of Crystallisation Calculations

32 marks · Difficulty 3.5 · recurrence 5%

Electrolysis Half-Equations & Product Identification

25 marks · Difficulty 3.2 · recurrence 5%

Organic Reaction Profiles, Functional Groups & Cracking

29 marks · Difficulty 2.8 · recurrence 5%

Reactivity Series, Displacement & Sacrificial Protection

25 marks · Difficulty 2.6 · recurrence 5%

Qualitative Ion Identification & Flame Tests

22 marks · Difficulty 2.5 · recurrence 5%

Rates of Reaction Graphs & Collision Theory

19 marks · Difficulty 2.7 · recurrence 5%

Time vs marks

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marksmins

Next-year prediction

Topics worth watching next year, with the reason shown directly below each bar.

Quantitative Chemistry (Gas Volumes at RTP & Titration Back-Calculations)95%

Stoichiometric calculations consistently form the highest-scoring discriminant in Higher Tier CCEA papers across both Unit 1/2 and Unit 3.

Organic Homologous Series: Alcohols, Carboxylic Acids & Polymerisation92%

Core syllabus pillar with heavy weighting on structural formulae, condensation/addition polymerisation, and oxidation mechanisms.

Cation and Anion Precipitation Identification Schemes90%

Standard anchor topic in Practical Booklet B; testing ammonia and sodium hydroxide precipitate solubilities.

Dynamic Equilibrium & Industrial Conditions (Haber / Contact Process)88%

Compromise temperature and pressure rationales under Le Châtelier's principle feature prominently every exam series.

Cumulative marks ladder

The line is your running mark total question by question; dashed lines are the estimated grade cut-offs. See which question the line crosses your target grade at, so you know how far you must answer cleanly and which questions decide a band.

Examiner insights

Official report

Common pitfalls

Failing to state 'per unit time' or 'collision frequency' when explaining reaction rate increases in collision theory.
Inverting the indicator colour transitions (e.g. reporting pink to colourless instead of colourless to pink when titrating acid into alkali or vice versa).
Omitting state symbols when specifically requested in balanced chemical equations (e.g., Zn(s) + H2SO4(aq) -> ZnSO4(aq) + H2(g)).
Drawing dot-and-cross diagrams without showing all outer shell non-bonding lone pairs on atoms like oxygen in H2O.
Neglecting the scaling multiplier (e.g. 250/25 = 10) when moving from conical flask titration titres to the initial volumetric flask sample.

Misconceptions

Believing weak acids have a higher concentration of H+ ions than strong acids of equal molarity, rather than lower degree of ionisation.
Confusing the direction of electron transfer in oxidation half-equations by writing e- on the reactant side instead of product side.
Assuming a catalyst increases the maximum yield of a reversible equilibrium reaction rather than solely increasing the rate of reaching equilibrium.
Confusing simple distillation with fractional distillation when separating miscible liquids with different boiling points.

Where marks are lost

QWC 6-marker extended responses: losing Level 3 band (5-6 marks) due to missing key sequential practical steps (e.g., rinsing burette with acid, removing funnel, reading bottom of meniscus).
Bond energy calculations: sign errors when computing (Bonds Broken - Bonds Formed) and miscounting specific bond multiplicities in larger hydrocarbon molecules.
Apparatus diagram questions: forgetting essential labels (e.g., pipeclay triangle, crucible, tripod) or leaving gaps in heating setups.
Titration tables in practical papers: failing to record all burette readings to exactly 1 decimal place or failing to provide units.

Estimated grade cut-off

Updated: 31 Aug 2026

Source: CCEA

Level	Mark	Percentage
A*	—	90%
A	—	80%
B	—	70%
C*	—	65%
C	—	60%
D	—	50%
E	—	40%
F	—	30%
G	—	20%

Official grade boundaries published by CCEA.

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Level	Mark	Percentage
A*	—	90%
A	—	80%
B	—	70%
C*	—	65%
C	—	60%
D	—	50%
E	—	40%
F	—	30%
G	—	20%

Level	Mark	Percentage
A*	—	90%
A	—	80%
B	—	70%
C*	—	65%
C	—	60%
D	—	50%
E	—	40%
F	—	30%
G	—	20%

Level	Mark	Percentage
A*	—	90%
A	—	80%
B	—	70%
C*	—	65%
C	—	60%
D	—	50%
E	—	40%
F	—	30%
G	—	20%