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Revision notes
GCSE
Chemistry
AQA
Higher
Grade 9 - Chemical Changes

Grade 9 - Chemical Changes

Chemistry: AQA GCSE Higher, topic 4.4.8

Test yourself on Grade 9 - Chemical Changes

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Previous topic4.4.7 End of Topic Test - Chemical Changes Next topic4.4.9 Exam-Style Questions - Electrolysis

Chemistry: AQA GCSE Higher contents

1 Atomic Structure
- 1.1 Atoms & Elements
  1.1.1 Elements & Compounds
  1.1.2 Chemical Formula
  1.1.3 Chemical Reactions
  1.1.4 Chemical Equations
  1.1.5 Mixtures
  1.1.6 Separating Mixtures
  1.1.7 Separating Mixtures 2
  1.1.8 Model of the Atom
  1.1.9 Sub-Atomic Particles
  1.1.10 Atom Size
  1.1.11 Atomic Number
  1.1.12 Atomic Number - Calculations
  1.1.13 Isotopes
  1.1.14 Isotopes HyperLearning
  1.1.15 Isotopes - Calculations
  1.1.16 Relative Atomic Mass
  1.1.17 Electron Structure
  1.1.18 Periodic Table
  1.1.19 The History of the Periodic Table
  1.1.20 Metals & Non-Metals
  1.1.21 Noble Gases
  1.1.22 Displacement Reaction
  1.1.23 Halogens
  1.1.24 Alkali Metals
  1.1.25 Alkali Metals - Properties
  1.1.26 Transition Metals
  1.1.27 Transition Metals - Special Properties
  1.1.28 End of Topic Test - Atomic Structure
  1.1.29 Grade 9 - Atoms & Elements
  1.1.30 Exam-Style Questions - Atomic Structure
  1.1.31 Application Questions - Atomic Structure
  1.1.32 Diagnostic Misconceptions - Balancing Equations
  1.1.33 Diagnostic Misconceptions - Isotopes
2 Chemical Bonding
3 Quantitative Chemistry
- 3.1 Chemical Measurements
  3.1.1 Conservation of Mass
  3.1.2 Relative Formula Mass
  3.1.3 Calculating Relative Formula Mass
  3.1.4 Relative Formula Mass - Calculations
  3.1.5 Changing Mass
  3.1.6 Measuring Mass
  3.1.7 Equations
  3.1.8 Empirical Formula
  3.1.9 Introducing Moles
  3.1.10 Relative Formula Mass
  3.1.11 Amounts of Substance
  3.1.12 Moles to Balance Equations
  3.1.13 Limiting Reactants
  3.1.14 Concentration of Solutions
  3.1.15 Moles - Calculations
  3.1.16 Percentage Yield
  3.1.17 Calculating Yield
  3.1.18 Percentage Yield - Calculations
  3.1.19 Moles & Yield
  3.1.20 Moles & Yield 2
  3.1.21 Atom Economy
  3.1.22 Reaction Pathway
  3.1.23 Atom Economy - Calculations
  3.1.24 Concentrations of Solute
  3.1.25 Calculating the Amount of Solute
  3.1.26 Amount of Substance in Relation to Volumes and Gas
  3.1.27 Concentrations & Amounts - Calculations
  3.1.28 Empirical Formula - Calculations
  3.1.29 End of Topic Test - Quant Chemistry
  3.1.30 Grade 9 - Quantitative Chemistry
  3.1.31 Exam-Style Questions - Moles
  3.1.32 Diagnostic Misconceptions - Calculating RFM
  3.1.33 Diagnostic Misconceptions - Moles
4 Chemical Changes
5 Energy Changes
- 5.1 Exothermic & Endothermic Reactions
  5.1.1 Energy Conservation
  5.1.2 Exothermic Reactions
  5.1.3 Endothermic Reactions
  5.1.4 Required Practical: Temperature Changes
  5.1.5 Reaction Profiles Requirements
  5.1.6 Reaction Profiles
  5.1.7 Reaction Profiles - Catalysed vs Uncatalysed
  5.1.8 Reaction Profiles - Chemical Bonds
  5.1.9 Diagnostic Misconceptions - Source of Energy
- 5.2 Chemical Cells & Fuel Cells
  5.2.1 Chemical Cells
  5.2.2 Changing Voltage Output
  5.2.3 Batteries
  5.2.4 Charging of Cells
  5.2.5 Fuel Cells
  5.2.6 Hydrogen Fuel Cell
  5.2.7 Hydrogen as an Alternative
  5.2.8 End of Topic Test - Energy Changes
  5.2.9 Grade 9 - Energy Changes
  5.2.10 Exam-Style Questions - Fuel Cells
6 The Rate & Extent of Chemical Change
- 6.1 Rate of Reaction
  6.1.1 Chemical Reactions
  6.1.2 Plotting Reaction Rates
  6.1.3 Required Practical: Effect of Concentration
  6.1.4 Collision Theory
  6.1.5 Key Factors of Rate of Reaction
  6.1.6 Catalysts
  6.1.7 Catalysts in Industry
- 6.2 Reversible Reactions
  6.2.1 Reversible Reactions
  6.2.2 Dynamic Equilibrium
  6.2.3 Conditions and Equilibrium
  6.2.4 Equilibrium Position - Temperature
  6.2.5 Equilibrium Position - Pressure
  6.2.6 Equilibrium Position - Concentration
  6.2.7 End of Topic Test - Rates of Reaction
  6.2.8 Grade 9 - Rate & Extent of Chemical Change
  6.2.9 Exam-Style Questions - Reversible Reactions
  6.2.10 Diagnostic Misconceptions - Temperature
  6.2.11 Diagnostic Misconceptions - Pressure
  6.2.12 Diagnostic Misconceptions - Concentration
  6.2.13 Diagnostic Misconceptions - Catalysts
7 Organic Chemistry
- 7.1 Carbon Compounds
  7.1.1 Crude Oil
  7.1.2 Properties of Hydrocarbons
  7.1.3 Alkanes
  7.1.4 Smallest Alkanes
  7.1.5 Fractional Distillation
  7.1.6 Process of Fractional Distillation
  7.1.7 Homologous Series
  7.1.8 Burning Hydrocarbons
  7.1.9 Heavy Fractions of Crude Oil
  7.1.10 Cracking
  7.1.11 Uses of Alkenes
  7.1.12 Exam-Style Questions - Organic Compounds
- 7.2 Alkenes & Alcohols
  7.2.1 Structure of Alkenes
  7.2.2 The Shortest Alkenes
  7.2.3 Reactions of Alkenes
  7.2.4 Types of Alkene Reactions
  7.2.5 Alcohols
  7.2.6 The Smallest Alcohols
  7.2.7 Reactions of Alcohols
  7.2.8 Fermentation
  7.2.9 Carboxylic Acids
  7.2.10 The Smallest Carboxylic Acids
  7.2.11 Reactions of Carboxylic Acids
  7.2.12 Addition Polymers
  7.2.13 Addition Polymers Examples
  7.2.14 Condensation Polymers
  7.2.15 Amino Acids
  7.2.16 Naturally Occurring Polymers - Protein (Formation)
  7.2.17 Naturally Occurring Polymers - Protein (Roles)
  7.2.18 Naturally Occurring Polymers - DNA
  7.2.19 Naturally Occurring Polymers - Others
  7.2.20 End of Topic Test - Alkanes & Alkenes
  7.2.21 End of Topic Test - Alcohols, Acids & Polymers
  7.2.22 Grade 9 - Organic Chemistry
  7.2.23 Exam-Style Questions - Alcohols
8 Chemical Analysis
9 Chemistry of the Atmosphere
- 9.1 The Earth's Atmosphere
  9.1.1 Proportions of Gases in the Atmosphere
  9.1.2 The Earth's Early Atmosphere
  9.1.3 Oxygen in the Atmosphere
  9.1.4 Carbon Dioxide in the Atmosphere
  9.1.5 Greenhouse Gases
  9.1.6 Greenhouse Gases & Human Activities
  9.1.7 Greenhouse Gases & Climate
  9.1.8 Climate Change
  9.1.9 Carbon Footprints
  9.1.10 Carbon Footprints Barriers
  9.1.11 Common Atmospheric Pollutants
  9.1.12 Properties of Atmospheric Pollutants
  9.1.13 End of Topic Test - The Earth
  9.1.14 Grade 9 - Chemistry of the Atmosphere
  9.1.15 Exam-Style Questions - Earth's Atmosphere
  9.1.16 Diagnostic Misconceptions - Greenhouse Effect
10 Using Resources

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