Edexcel GCSE Combined Science past papers
Edexcel GCSE Combined Science June 2025 Chemistry Paper 1H
- 1SC0/1CH
- Higher
- 1 hour 10 minutes
- 60 marks
Question paper, Mark scheme, Examiner report: on the Pearson Edexcel website.
Practise this paper's topics
5 new exam questions, 28 minutes, marked as you go. Free, no account.
- Higher: redox, strong and weak acids, electrode half equations
- Reversible reactions and equilibrium
- Atoms, compounds, mixtures and the atomic model
- Higher: moles and balancing with moles
- Ionic and covalent bonding
What it tested
- Bonding and structure18 marks
- Chemical changes13 marks
- Rates and equilibrium11 marks
- Atomic structure and the periodic table9 marks
- Quantitative chemistry9 marks
- Q1Atoms, compounds, mixtures and the atomic modelAtomic size, relative mass and electron structure9 marks
- Q2Ionic and covalent bondingMetallic bonding9 marks
- Q3States of matter and properties of substancesAtomic size, relative mass and electron structure9 marks
- Q4Higher: moles and balancing with molesReactivity, extraction and reduction9 marks
- Q5Higher: redox, strong and weak acids, electrode half equationsHigher: moles and balancing with moles13 marks
- Q6Reversible reactions and equilibriumHigher: equilibrium and pressure11 marks
June 2025 Higher grade boundaries
Marks needed across all six Higher papers, out of 360.
- 9-9284
- 9-8269
- 8-8255
- 8-7241
- 7-7227
- 7-6207
- 6-6187
- 6-5167
- 5-5147
- 5-4127
- 4-4107
- 4-397
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