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  1. A Level
  3. Chemistry OCR A

Chemistry

Spec H432

Free OCR A A Level Chemistry revision: 731 exam-style questions and past papers from 2017–2025 with mark schemes.

Module 1: Development of practical skills in chemistry

Practical skills assessed in a written examination

Practical skills assessed in the practical endorsement

Module 2: Foundations in chemistry

Atoms and reactions

Electrons, bonding and structure

Module 3: Periodic table and energy

The periodic table

Physical chemistry

Module 4: Core organic chemistry

Basic concepts and hydrocarbons

Alcohols, haloalkanes and analysis

Module 5: Physical chemistry and transition elements (A-level only)

Rates, equilibrium and pH

Energy

Transition elements

Module 6: Organic chemistry and analysis (A-level only)

Aromatic compounds, carbonyls and acids

Nitrogen compounds, polymers and synthesis

Analysis

Assessment at a glance

AssessmentFormatDurationMarksWeighting
Paper 1Written exam2h 15m100 marks37%
Paper 2Written exam2h 15m100 marks37%
Paper 3Written exam1h 30m70 marks26%
Practical endorsementNon-exam assessment——Pass/fail

Course aims & skills

OCR A A Level Chemistry builds the skills examiners reward. By the end of the course you should be able to:

  • recall scientific facts, terms, definitions and units
  • apply knowledge and understanding to unfamiliar situations
  • interpret, analyse and evaluate experimental data
  • plan investigations and evaluate methods and conclusions
  • carry out the required practicals and describe the techniques
  • use and rearrange equations, and work with significant figures
  • process data with appropriate maths skills
  • construct and read graphs, tables and diagrams
  • build and communicate evidence-based scientific arguments

Frequently Asked Questions