Edexcel IGCSE Chemistry Past Papers
Browse past paper analysis, answer explanations, grade boundary estimates, and thinka-original sample papers by subject and year.
Available years: 2025, 2024, 2023
A demanding yet balanced exam series covering extensive calculations, organic reaction profiles, and core bonding explanations. Success required precise terminology and attention to calculation details such as signs and significant figures.
The Summer 2025 Edexcel International GCSE Chemistry papers (1CR and 2CR) present a well-balanced assessment of core concepts, featuring strong emphases on calculations, chemical energetics, and foundational organic chemistry, while offering a fair split between direct recall and higher-tier explanations.
The November 2025 sittings of Papers 1C and 2C present a comprehensive and structurally sound assessment of the Edexcel International GCSE Chemistry specification. High-tariff themes include Energetics (totaling 22 marks), Chemical Calculations, and Organic synthesis pathways. Key differentiators include non-standard calculation applications, such as a 113% yield analysis and isotopic molecular probability.
A highly balanced and comprehensive pair of papers covering fundamental principles of chemistry, physical calculations, and organic pathways. While basic recall questions provided accessible marks, multi-step calculations and structured bonding explanations separated high-performing students.
The Summer 2024 Edexcel International GCSE Chemistry series (Papers 1CR and 2CR) heavily emphasized stoichiometry, bond energy thermodynamics, and rate kinetics, while rewarding candidates with exact, syllabus-compliant technical explanations.
This Paper 2C features a highly structured examination of organic and analytical chemistry, with high-weighting calculations and rigorous questions on separation techniques, Group 1 trends, and polymerisation.
A comprehensive analysis of the Summer 2023 Pearson Edexcel International GCSE Chemistry (4CH1) Papers 1C and 2C, highlighting stoichiometry, organic reaction pathways, practical calorimetry, and equilibrium.
The Summer 2023 Chemistry Unit 4CH1 (Papers 1CR and 2CR) represented a balanced and well-discriminating assessment. Standard mathematical stoichiometry and energetics calculations performed better than expected, whereas practical experimental design and specific chemical terminology (such as distinguishing halogens from halide ions) presented significant hurdles for many candidates.
The November 2023 series tested core conceptual understandings in physical and organic chemistry with a heavy focus on multi-step calculations, experimental logic, and descriptive analysis of structure and bonding.
Stop reading past papers. Start scoring on them
thinka is an AI practice app for these subjects: unlimited exam-style questions, instant marking, and step-by-step solutions. 100,000+ students use it to turn past-paper review into real marks.