What this topic covers
Topic C3: Chemical reactions has 4 subtopics:
- Introducing chemical reactions
- Energetics
- Types of chemical reactions
- Electrolysis
GCSE OCR Higher Chemistry
Topic C3: Chemical reactions – GCSE OCR Higher Chemistry revision notes
Revise Topic C3: Chemical reactions for GCSE OCR Higher Chemistry, including Introducing chemical reactions and Energetics. 40 lessons across 4 subtopics.
Topic C3: Chemical reactions covers Introducing chemical reactions, Energetics, Types of chemical reactions, and Electrolysis in GCSE OCR Higher Chemistry. 40 lessons in 4 subtopics.
40
Lessons
4
Subtopics
Topic C3: Chemical reactions lessons by subtopic
40 lessons, grouped by subtopic.
Introducing chemical reactions
- The Law of Conservation of Mass
- Balancing Chemical Equations
- Introduction to Moles and Avogadro's Constant
- Molar Mass and Converting Between Moles and Mass
- Understanding Chemical Equations in Terms of Moles
- Calculating Masses from Balanced Chemical Equations
- Converting Masses to Moles for Equation Balancing
- Balancing Equations from Mass Data
- Explaining Mass Changes in Open Systems
- Understanding Uncertainty in Chemical Measurements
- Understanding Limiting Reactants
- Understanding Electrode Reactions in Electrolysis
- Writing Half Equations for Electrode Reactions
Energetics
- Understanding Exothermic and Endothermic Reactions
- Examples and Applications of Energy Transfer Reactions
- Drawing and Understanding Reaction Profiles
- Activation Energy and Collision Theory
- Breaking and Forming Bonds
- Calculating Energy Changes Using Bond Energies
- Explaining Exothermic and Endothermic Reactions
Types of chemical reactions
- Acid-Metal Reactions: Products and Patterns
- Redox in Acid-Metal Reactions
- Metal Oxides and Oxidation Reactions
- What Salts Are Produced in Neutralisation?
- Neutralisation Reactions and Salt Formulae
- Metal Reactions and the Reactivity Series
- Displacement Reactions and the Extended Reactivity Series
- Making Soluble Salts from Acids
- Crystallising Salt Solutions and Making Pure Samples
- Understanding the pH Scale
- Acids, Alkalis and Neutralisation
Electrolysis
- Understanding Electrolytes and Ion Movement
- Writing Half Equations for Electrolysis
- Products of Electrolysis in Molten Ionic Compounds
- Electrolytic extraction of reactive metals
- Aluminium production and electrode replacement
- Predicting Products in Aqueous Electrolysis
- Products at the Cathode and Anode
- Understanding Electrode Reactions in Electrolysis
- Writing Half Equations for Electrode Reactions
More in this course
Go back to the full GCSE OCR Higher Chemistry topic list, or practise this topic with past-paper questions.
Frequently asked questions
Is this the right Topic C3: Chemical reactions page for my course?
These notes are for GCSE OCR Higher Chemistry. If you are on a different exam board or tier, choose your course from the Chemistry page instead, because the content is not always the same.
What should I do after reading the lessons?
Test yourself without the notes open, then try past-paper questions on the same topic. The questions you get wrong tell you which lesson to go back to.