OCR
OCR A level Chemistry revision.
Ilmino organises A level Chemistry around the OCR A level Chemistry H432 specification, so every topic, every required piece of practical work and every mark scheme a student sees belongs to the board they are actually sitting.
OCR publishes two A level Chemistry specifications. Ilmino follows Chemistry A (H432); the alternative is Chemistry B, Salters (H433), which teaches the same chemistry through contexts.
The exam, in short
How OCR examines A level Chemistry.
- Specification
- A level Chemistry A (H432)
- Papers
- Three written papers, plus the practical endorsement, which is reported separately from the A level grade.
- Tiers
- Single tier. There is no Foundation or Higher entry at A level.
- First exam series
- Summer 2017
Spec aligned
Every topic on the OCR specification.
The question bank is grouped by this board's specification, not by a generic topic list, so a student works through the same headings their teacher and their revision guide use.
Atomic structure and bonding
- Atomic structure and electron configuration
- Ionic, covalent and metallic bonding
- Shapes of molecules and intermolecular forces
Amount of substance
- Moles and the ideal gas equation
- Empirical and molecular formulae
- Titration and acid-base calculations
Energetics and kinetics
- Enthalpy changes and Hess's law
- Bond enthalpies
- Rate equations and orders of reaction
- The Arrhenius equation
Equilibrium and redox
- Le Chatelier's principle and Kc
- Acids, bases and pH calculations
- Buffers
- Redox and electrode potentials
Inorganic chemistry
- Periodicity
- Group 2 and Group 7 chemistry
- Transition metals
Organic chemistry: fundamentals
- Nomenclature and isomerism
- Alkanes, alkenes and mechanisms
- Haloalkanes
- Alcohols
Organic chemistry: further topics
- Aromatic chemistry
- Carbonyl compounds and carboxylic acids
- Amines and amino acids
- Polymers
Analysis
- Chromatography
- Mass spectrometry and infrared spectroscopy
- NMR spectroscopy
Marking
How marking follows OCR.
Ilmino stores an examiner-style mark scheme for every question, written per board. An answer is marked against the wording OCR credits, not against a general idea of what is right.
- Each mark is awarded or withheld on its own, with the mark-scheme point it maps to shown beside the answer.
- Command words are read the way OCR uses them, so describe, explain, evaluate and calculate are each held to their own standard.
- The phrase an examiner is looking for has to appear. A right idea in the wrong words loses the mark here, exactly as it would in the exam.
- Handwritten working is photographed and marked line by line, so method marks survive an arithmetic slip.
- When a mark is lost, Lumi explains which mark-scheme point was missed and what would have earned it.
Other boards for A level Chemistry
Sitting a different board? The whole bank switches with your choice, and progress carries across because it is stored by skill.
OCR in other subjects
Questions
OCR A level Chemistry on Ilmino
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AQA, Pearson Edexcel and OCR are trademarks of their owners and do not endorse Ilmino.
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