OCR Gateway GCSE Chemistry past papers
OCR Gateway GCSE Chemistry June 2025 Paper 3
- J248/03
- Higher
- Topics C1 to C3
- 1 hour 45 minutes
- 90 marks
Question paper, Mark scheme, Examiner report: on the OCR website.
Practise this paper's topics
5 new exam questions, 28 minutes, marked as you go. Free, no account.
- Rates of reaction, collisions and catalysts
- Atoms, compounds, mixtures and the atomic model
- Higher: moles and balancing with moles
- Purity, formulations and chromatography
- Exothermic and endothermic reactions, reaction profiles
What it tested
- Rates and equilibrium17 marks
- Bonding and structure16 marks
- Atomic structure and the periodic table16 marks
- Quantitative chemistry11 marks
- Chemical analysis9 marks
- Energy changes8 marks
- Chemical changes4 marks
- Q1Ionic and covalent bonding1 mark
- Q2Higher: ionic equations and half equationsAcids, salts and pH1 mark
- Q3Atoms, compounds, mixtures and the atomic model1 mark
- Q4Conservation of mass and relative formula mass1 mark
- Q5Acids, salts and pH1 mark
- Q6Conservation of mass and relative formula mass1 mark
- Q7Ionic and covalent bondingPolymers, giant structures, metals and alloys1 mark
- Q8Atoms, compounds, mixtures and the atomic model1 mark
15 more questions
- Q9Ionic and covalent bonding1 mark
- Q10Ionic and covalent bonding1 mark
- Q11The periodic table, metals and noble gases1 mark
- Q12Higher: bond energy calculations1 mark
- Q13Acids, salts and pH1 mark
- Q14Higher: redox, strong and weak acids, electrode half equationsElectrolysis1 mark
- Q15Acids, salts and pH1 mark
- Q16Not in our course9 marks
- Q17Purity, formulations and chromatography9 marks
- Q18Exothermic and endothermic reactions, reaction profiles7 marks
- Q19Atoms, compounds, mixtures and the atomic modelAtomic size, relative mass and electron structure12 marks
- Q20States of matter and properties of substancesIonic and covalent bonding6 marks
- Q21Diamond, graphite, graphene and fullerenes6 marks
- Q22Rates of reaction, collisions and catalystsAcids, salts and pH17 marks
- Q23Higher: moles and balancing with molesHigher: redox, strong and weak acids, electrode half equations9 marks
June 2025 Higher grade boundaries
Marks needed across both Higher papers, out of 180.
- Grade 9158
- Grade 8145
- Grade 7132
- Grade 6112
- Grade 592
- Grade 473
- Grade 363
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