AQA GCSE Trilogy Chemistry 1h 2025 Question Paper Pdf

Get the official AQA GCSE Combined Science: Trilogy Chemistry Paper 1 Higher Tier question paper from the May 2025 exam series (8464/C/1H). This examiner-authentic PDF contains the complete Higher Tier Chemistry Paper 1 in its original AQA exam layout, including electrolysis calculations, graph plotting, exothermic-reaction planning, alpha-particle scattering theory, Group 7 trends, electrolysis of aluminium oxide, bond-energy calculations, ionic bonding analysis, and extended-response chemistry questions exactly as candidates received them in the live examination.

This 2025 Chemistry 1H paper assesses electrolysis of copper chloride and potassium chloride solutions, concentration calculations, exothermic reactions, percentage mass calculations, atomic structure, isotopes, ions, halogen reactivity, boiling-point trends, displacement reactions, extraction of metals, reduction and oxidation, cryolite in aluminium extraction, alloys, weak and strong acids, pH and hydrogen-ion concentration, bond energies, conservation of mass, magnesium carbonate decomposition, empirical mole-ratio calculations, ionic bonding, metallic bonding, and giant covalent structures across the AQA GCSE Combined Science specification. Pair it with the matching AQA 8464/C/1H mark scheme on markscheme.net for complete examiner-standard revision, self-marking, and timed mock-exam practice. Updated for the 2025/2026 academic year, optimised for mobile and desktop, and instantly downloadable from markscheme.net.

This document is designed for GCSE Combined Science: Trilogy Higher Tier students preparing for the 2026 AQA examination series, including Year 11 candidates targeting grades 7–9, resit students improving previous GCSE Chemistry results, and home-educated learners following the AQA 8464 specification. It is especially valuable for practising Higher Tier chemistry calculations, graph interpretation, required practical planning, six-mark method questions, and extended-response explanations under authentic exam conditions.

It is also essential for chemistry teachers, science departments, private tutors, revision-course providers, and parents supporting GCSE revision at home. The paper can be used for classroom mocks, intervention sessions, retrieval-practice tasks, structured revision programmes, and examiner-style assessment using the official May 2025 mark scheme.