2025 OCR GCSE Chemistry B Twenty First Century Science Paper 3 and Mark Scheme Combined (J258/03 Breadth in Chemistry (Higher Tier))

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This resource contains the 2025 OCR GCSE Chemistry B (Twenty First Century Science) Paper 3 – Breadth in Chemistry (Higher Tier) for specification J258/03, combined with the official mark scheme.
It provides complete coverage of the Higher Tier content assessed in Paper 3, making it an essential revision and exam preparation tool for students, teachers, and tutors.

What’s included?

The full 2025 OCR Chemistry B Paper 3 (Higher Tier)
The official OCR mark scheme
Detailed examiner guidance showing how marks are awarded
Questions covering all key Higher Tier topics, including:
- Atomic structure and the periodic table
- Bonding, structure, and chemical properties
- Quantitative chemistry and chemical calculations
- Chemical reactions and energy changes
- Rates of reaction and chemical equilibrium
- Organic chemistry in depth
- Required practicals and higher-level practical skills

Ideal for:

Students revising for the Higher Tier OCR GCSE Chemistry B exam
Teachers preparing lessons, homework, or mock exams
Practicing exam technique and understanding mark allocations
Checking answers against the official mark scheme
Independent study or group revision sessions

This combined exam paper and mark scheme is a complete resource for effective preparation for the 2025 OCR GCSE Chemistry B Paper 3 – Breadth in Chemistry (Higher Tier, J258/03).

Specifications

Author	zeus999 team
Published	05 Dec 2025
Included files	PDF
OCR GCSE Chemistry B Twenty First Century Science Chemistry J258/03 Chemistry Paper 3 Breadth in Chemistry Higher Tier Chemistry GCSE Chemistry 2025 OCR Chemistry B 2025 OCR exam paper OCR mark scheme