CHEMISTRY
Questions Students
Struggle With Most
and How to
Answer Them
EXAM READY | CLEAR ANSWERS
30+ 100+ A*
Topics Questions Techniques
Atomic Structure Bonding Equilibrium Redox Organic Rate
Master every tricky question before exam day
A complete student guide to OCR Chemistry exam success
,OCR Chemistry A-Level Questions Students Struggle With Most
Table of Contents
1 Atomic Structure & The Periodic Table
• Electron configuration questions
• Ionisation energy trends
• Mass spectrometry
2 Bonding & Structure
• Dot-and-cross diagrams
• Shapes of molecules
• Intermolecular forces
3 Energetics
• Enthalpy cycles (Hess's Law)
• Born-Haber cycles
• Entropy and free energy
4 Kinetics & Rates of Reaction
• Rate equations and orders
• Activation energy & Arrhenius
• Mechanisms
5 Chemical Equilibrium
• Writing Kc and Kp expressions
• Le Chatelier's Principle
• Calculating equilibrium constants
6 Redox Chemistry & Electrochemistry
• Half-equations and balancing
• EMF and electrode potentials
• Electrolysis calculations
7 Acids, Bases & Buffers
• pH calculations
• Titration curves
• Buffer calculations
8 Organic Chemistry Fundamentals
• Naming and isomerism
• Reaction mechanisms
• Functional group tests
Page 2
, OCR Chemistry A-Level Questions Students Struggle With Most
9 Further Organic Chemistry
• Arenes and benzene
• Carbonyl chemistry
• Polymerisation
1 Analytical Techniques
0 • NMR spectroscopy
• Mass spectrometry in organic
• IR spectroscopy
Page 3
Questions Students
Struggle With Most
and How to
Answer Them
EXAM READY | CLEAR ANSWERS
30+ 100+ A*
Topics Questions Techniques
Atomic Structure Bonding Equilibrium Redox Organic Rate
Master every tricky question before exam day
A complete student guide to OCR Chemistry exam success
,OCR Chemistry A-Level Questions Students Struggle With Most
Table of Contents
1 Atomic Structure & The Periodic Table
• Electron configuration questions
• Ionisation energy trends
• Mass spectrometry
2 Bonding & Structure
• Dot-and-cross diagrams
• Shapes of molecules
• Intermolecular forces
3 Energetics
• Enthalpy cycles (Hess's Law)
• Born-Haber cycles
• Entropy and free energy
4 Kinetics & Rates of Reaction
• Rate equations and orders
• Activation energy & Arrhenius
• Mechanisms
5 Chemical Equilibrium
• Writing Kc and Kp expressions
• Le Chatelier's Principle
• Calculating equilibrium constants
6 Redox Chemistry & Electrochemistry
• Half-equations and balancing
• EMF and electrode potentials
• Electrolysis calculations
7 Acids, Bases & Buffers
• pH calculations
• Titration curves
• Buffer calculations
8 Organic Chemistry Fundamentals
• Naming and isomerism
• Reaction mechanisms
• Functional group tests
Page 2
, OCR Chemistry A-Level Questions Students Struggle With Most
9 Further Organic Chemistry
• Arenes and benzene
• Carbonyl chemistry
• Polymerisation
1 Analytical Techniques
0 • NMR spectroscopy
• Mass spectrometry in organic
• IR spectroscopy
Page 3
