Source: https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-2-calculating-oxygen-in-the-air-metal [Revision notes](https://senecalearning.com/en-gb/revision-notes.md) › [IGCSE](https://senecalearning.com/en-gb/revision-notes/igcse.md) › [Chemistry](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry.md) › [Edexcel IGCSE](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse.md) › [Higher](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher.md) › Calculating Oxygen in the Air - Metal # Calculating Oxygen in the Air - Metal Chemistry: Edexcel IGCSE, topic 9.1.2 ## Calculating the Percentage of Oxygen in the Air You need to be able to calculate the percentage of oxygen in the air from the reaction of a metal, like iron, with air. ### Preparation ![Preparation](https://image-v2.cdn.app.senecalearning.com/2018-03/e6bc4370-606d-4110-a40a-0bbffa99267b/Making%20chemicals.jpg) - Place wet iron filings inside an inverted burette. - Place the open end of the burette in a trough of water. Open the tap to allow water to enter the bottom of the burette. - Close the tap and record the volume of gas in the burette. - Leave the apparatus until volume of gas inside remains constant (this may take several days). ### Recordings - Record the final volume of gas. Subtract the final volume from the initial volume to determine the volume of oxygen. - Divide this value by the initial volume and multiply by 100 to calculate the percentage of oxygen in the air. ## Test yourself on Calculating Oxygen in the Air - Metal - The Percentage of Oxygen in the air - Which of these are steps in the experiment for working out the percentage of oxygen in the air? [Practise this topic for free](https://app.senecalearning.com/classroom/course/967b4370-21e8-11e8-8c0c-d79041e9c8a6/section/6524177c-10ad-40d4-844c-e43b915ffb7d/session) - Previous topic: [9.1.1 Gases in the Air](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-1-gases-in-the-air.md) - Next topic: [9.1.3 Calculating Oxygen in the Air - Non-Metal](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-3-calculating-oxygen-in-the-air-non-metal.md) ## Chemistry: Edexcel IGCSE contents ### 1 States of Matter - 1.1 States of Matter - [1.1.1 States of Matter](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-1-states-of-matter.md) - [1.1.2 Simple Sphere](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-2-simple-sphere.md) - [1.1.3 Changes of State](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-3-changes-of-state.md) - [1.1.4 Changes of State 2](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-4-changes-of-state-2.md) - [1.1.5 Changes of State 3](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-5-changes-of-state-3.md) - [1.1.6 Changes of State and Temperature](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-6-changes-of-state-and-temperature.md) - [1.1.7 Solubility](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-7-solubility.md) - [1.1.8 Solubility Curves](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-8-solubility-curves.md) - [1.1.9 Solubility - Experiments](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-9-solubility-experiments.md) - [1.1.10 Diffusion - Experiment](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-10-diffusion-experiment.md) - [1.1.11 Changing State HyperLearning](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/1-1-11-changing-state-hyperlearning.md) ### 2 Elements, Compounds & Mixtures - 2.1 Elements, Mixtures & Compounds - [2.1.1 Elements & Compounds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-1-elements-and-compounds.md) - [2.1.2 Chemical Formula](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-2-chemical-formula.md) - [2.1.3 Mixtures](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-3-mixtures.md) - [2.1.4 Purity](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-4-purity.md) - [2.1.5 Separating Mixtures](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-5-separating-mixtures.md) - [2.1.6 Separating Mixtures 2](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-6-separating-mixtures-2.md) - [2.1.7 Paper Chromatography](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-7-paper-chromatography.md) - [2.1.8 Paper Chromatography Analysis](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-8-paper-chromatography-analysis.md) - [2.1.9 Paper Chromatography - Practical](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-9-paper-chromatography-practical.md) - [2.1.10 End of Topic Test - Elements,Compounds,Mixtures](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-10-end-of-topic-test-elementscompoundsmixtures.md) - [2.1.11 Grade 9 - Chromatography](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-11-grade-9-chromatography.md) - [2.1.12 Exam-Style Questions - Separation of Mixtures](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/2-1-12-exam-style-questions-separation-of-mixtures.md) ### 3 Atomic Structure - 3.1 Atoms - [3.1.1 Atomic Structure](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/3-1-1-atomic-structure.md) - [3.1.2 Atom Size](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/3-1-2-atom-size.md) - [3.1.3 Subatomic Particles](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/3-1-3-subatomic-particles.md) - [3.1.4 Atomic Number](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/3-1-4-atomic-number.md) - [3.1.5 Relative Atomic Mass](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/3-1-5-relative-atomic-mass.md) - [3.1.6 Isotopes](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/3-1-6-isotopes.md) - [3.1.7 Isotopes 2](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/3-1-7-isotopes-2.md) ### 4 The Periodic Table - 4.1 The Periodic Table - [4.1.1 Periodic Table Arrangement](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/4-1-1-periodic-table-arrangement.md) - [4.1.2 Electron Structure](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/4-1-2-electron-structure.md) - [4.1.3 Metals & Non-Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/4-1-3-metals-and-non-metals.md) - [4.1.4 Noble Gases](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/4-1-4-noble-gases.md) - [4.1.5 End of Topic Test- Atomic Structure,Periodic Table](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/4-1-5-end-of-topic-test-atomic-structureperiodic-table.md) - [4.1.6 Grade 9 - Atomic Structure, Periodic Table](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/4-1-6-grade-9-atomic-structure-periodic-table.md) - [4.1.7 Exam-Style Questions -Alkali Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/4-1-7-exam-style-questions-alkali-metals.md) ### 5 Chemical Formulae, Equations & Calculations - 5.1 Equations - [5.1.1 Forming Equations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-1-forming-equations.md) - [5.1.2 Balancing Symbols](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-2-balancing-symbols.md) - [5.1.3 State Symbols](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-3-state-symbols.md) - [5.1.4 Relative Formula Mass](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-4-relative-formula-mass.md) - [5.1.5 Calculating Relative Formula Mass](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-5-calculating-relative-formula-mass.md) - [5.1.6 Relative Formula Mass - Calculations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-6-relative-formula-mass-calculations.md) - [5.1.7 Introducing Moles](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-7-introducing-moles.md) - [5.1.8 Relative Formula Mass](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-8-relative-formula-mass.md) - [5.1.9 Amounts of Substance](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-9-amounts-of-substance.md) - [5.1.10 Moles & Yield](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-10-moles-and-yield.md) - [5.1.11 Moles - Calculations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-11-moles-calculations.md) - [5.1.12 Balancing Equations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-12-balancing-equations.md) - [5.1.13 Moles to Balance Equations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-13-moles-to-balance-equations.md) - [5.1.14 Limiting Reactants](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-14-limiting-reactants.md) - [5.1.15 Chemical Measurements](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-15-chemical-measurements.md) - [5.1.16 Calculating Mass](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-16-calculating-mass.md) - [5.1.17 Changing Mass](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-17-changing-mass.md) - [5.1.18 Exam-Style Questions - Moles](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-18-exam-style-questions-moles.md) - [5.1.19 Percentage Yield](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-19-percentage-yield.md) - [5.1.20 Calculating Yield](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-20-calculating-yield.md) - [5.1.21 Percentage Yield - Calculations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-21-percentage-yield-calculations.md) - [5.1.22 Empirical & Molecular Formula](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-22-empirical-and-molecular-formula.md) - [5.1.23 Experiment for Empirical Formula](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-23-experiment-for-empirical-formula.md) - [5.1.24 Empirical Formula - Calculations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-24-empirical-formula-calculations.md) - [5.1.25 Concentrations & Amounts](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-25-concentrations-and-amounts.md) - [5.1.26 Conclusion of Solutions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-26-conclusion-of-solutions.md) - [5.1.27 Volumes and Gases](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-27-volumes-and-gases.md) - [5.1.28 Concentration & Amounts - Calculations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-28-concentration-and-amounts-calculations.md) - [5.1.29 End of Topic Test - Equations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-29-end-of-topic-test-equations.md) - [5.1.30 Grade 9 - Equations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/5-1-30-grade-9-equations.md) ### 6 Bonding - 6.1 Ionic Bonding - [6.1.1 Dot & Cross Diagrams](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-1-dot-and-cross-diagrams.md) - [6.1.2 Changes in Number of Subatomic Particles](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-2-changes-in-number-of-subatomic-particles.md) - [6.1.3 Ionic Bonding](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-3-ionic-bonding.md) - [6.1.4 Ions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-4-ions.md) - [6.1.5 Types of Bonding](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-5-types-of-bonding.md) - [6.1.6 Ion Formation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-6-ion-formation.md) - [6.1.7 Identifying Ionic Compounds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-7-identifying-ionic-compounds.md) - [6.1.8 Ionic Compounds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-8-ionic-compounds.md) - [6.1.9 Ionic and Metallic Bonding](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-9-ionic-and-metallic-bonding.md) - [6.1.10 Ion Charges](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-1-10-ion-charges.md) - 6.2 Covalent Bonding - [6.2.1 Covalent Bonding](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-1-covalent-bonding.md) - [6.2.2 Dot-and-Cross Diagrams](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-2-dot-and-cross-diagrams.md) - [6.2.3 Representing Covalent Bonds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-3-representing-covalent-bonds.md) - [6.2.4 Covalent Bond Examples](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-4-covalent-bond-examples.md) - [6.2.5 Covalent Bond Examples 2](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-5-covalent-bond-examples-2.md) - [6.2.6 Simple Covalent Molecules](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-6-simple-covalent-molecules.md) - [6.2.7 Chemical Properties of Small Molecules](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-7-chemical-properties-of-small-molecules.md) - [6.2.8 Giant Covalent Structures](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-8-giant-covalent-structures.md) - [6.2.9 Giant Covalent Structures 2](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-9-giant-covalent-structures-2.md) - [6.2.10 Carbon Structures - Diamonds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-10-carbon-structures-diamonds.md) - [6.2.11 Carbon Structures - Graphite](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-11-carbon-structures-graphite.md) - [6.2.12 Carbon Structures - Fullerenes](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-12-carbon-structures-fullerenes.md) - [6.2.13 Carbon Structures - Summary](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-13-carbon-structures-summary.md) - [6.2.14 Exam-Style Questions - Allotropes of Carbon](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-2-14-exam-style-questions-allotropes-of-carbon.md) - 6.3 Metallic Bonding - [6.3.1 Metallic Bonding](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-3-1-metallic-bonding.md) - [6.3.2 Metals as Conductors](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-3-2-metals-as-conductors.md) - [6.3.3 Pure Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-3-3-pure-metals.md) - [6.3.4 End of Topic Test - Bonding](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-3-4-end-of-topic-test-bonding.md) - [6.3.5 Grade 9 - Bonding](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-3-5-grade-9-bonding.md) - [6.3.6 Exam-Style Questions - Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/6-3-6-exam-style-questions-metals.md) ### 7 Electrolysis - 7.1 Electrolysis - [7.1.1 Molten Ionic Compounds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/7-1-1-molten-ionic-compounds.md) - [7.1.2 Electrolysis - Process](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/7-1-2-electrolysis-process.md) - [7.1.3 Electrolysis - Aqueous Solutions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/7-1-3-electrolysis-aqueous-solutions.md) - [7.1.4 Electrolysis - Copper Sulfate](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/7-1-4-electrolysis-copper-sulfate.md) - [7.1.5 Electrolysis - Examples](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/7-1-5-electrolysis-examples.md) - [7.1.6 Half Equations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/7-1-6-half-equations.md) - [7.1.7 Exam-Style Questions - Electrolysis](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/7-1-7-exam-style-questions-electrolysis.md) ### 8 Groups of the Periodic Table - 8.1 Alkali Metals & Halogens - [8.1.1 Alkali Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-1-alkali-metals.md) - [8.1.2 Alkali Metals - Properties](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-2-alkali-metals-properties.md) - [8.1.3 Alkali Metal Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-3-alkali-metal-reactions.md) - [8.1.4 Reactivity of Alkali Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-4-reactivity-of-alkali-metals.md) - [8.1.5 Halogens - Properties](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-5-halogens-properties.md) - [8.1.6 Halogens - Colours and States](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-6-halogens-colours-and-states.md) - [8.1.7 Halogen - Displacement Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-7-halogen-displacement-reactions.md) - [8.1.8 Halogen - Displacement Reactions 2](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-8-halogen-displacement-reactions-2.md) - [8.1.9 Reactions Between Halogens and Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-9-reactions-between-halogens-and-metals.md) - [8.1.10 Hydrogen Halides](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-10-hydrogen-halides.md) - [8.1.11 End of Topic Test - Alkali Metals & Halogens](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-11-end-of-topic-test-alkali-metals-and-halogens.md) - [8.1.12 Grade 9 - Alkali Metals & Halogens](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-12-grade-9-alkali-metals-and-halogens.md) - [8.1.13 Exam-Style Questions - Alkali Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/8-1-13-exam-style-questions-alkali-metals.md) ### 9 The Atmosphere - 9.1 Gases in the Atmosphere - [9.1.1 Gases in the Air](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-1-gases-in-the-air.md) - [9.1.2 Calculating Oxygen in the Air - Metal](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-2-calculating-oxygen-in-the-air-metal.md) - [9.1.3 Calculating Oxygen in the Air - Non-Metal](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-3-calculating-oxygen-in-the-air-non-metal.md) - [9.1.4 Oxygen](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-4-oxygen.md) - [9.1.5 Carbon Dioxide](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-5-carbon-dioxide.md) - [9.1.6 Greenhouse Gases](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-6-greenhouse-gases.md) - [9.1.7 Greenhouse Gases & Human Activities](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-7-greenhouse-gases-and-human-activities.md) - [9.1.8 Greenhouse Gases & Climate](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-8-greenhouse-gases-and-climate.md) - [9.1.9 End of Topic Test - Gases in the Atmosphere](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-9-end-of-topic-test-gases-in-the-atmosphere.md) - [9.1.10 Grade 9 - Gases in the Atmosphere](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/9-1-10-grade-9-gases-in-the-atmosphere.md) ### 10 Reactivity Series - 10.1 Reactivity Series - [10.1.1 Reactivity Diagram](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-1-reactivity-diagram.md) - [10.1.2 Displacement Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-2-displacement-reactions.md) - [10.1.3 Reactivity Tests - Water](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-3-reactivity-tests-water.md) - [10.1.4 Reactivity Tests - Acid](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-4-reactivity-tests-acid.md) - [10.1.5 Reactivity Tests - Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-5-reactivity-tests-metals.md) - [10.1.6 Corrosion](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-6-corrosion.md) - [10.1.7 Preventing Corrosion](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-7-preventing-corrosion.md) - [10.1.8 Metal Oxide](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-8-metal-oxide.md) - [10.1.9 Oxidisation & Reduction](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-9-oxidisation-and-reduction.md) - [10.1.10 Redox Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-10-redox-reactions.md) - [10.1.11 End of Topic Test - Reactivity Series](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-11-end-of-topic-test-reactivity-series.md) - [10.1.12 Grade 9 - Reactivity Series](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-12-grade-9-reactivity-series.md) - [10.1.13 Exam-Style Questions - Redox Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/10-1-13-exam-style-questions-redox-reactions.md) ### 11 Metal Extraction - 11.1 Metal Extraction - [11.1.1 Extracting Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/11-1-1-extracting-metals.md) - [11.1.2 Extracting Metals - Electrolysis](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/11-1-2-extracting-metals-electrolysis.md) - [11.1.3 Alloys](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/11-1-3-alloys.md) - [11.1.4 Metal Alloys](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/11-1-4-metal-alloys.md) - [11.1.5 End of Topic Test - Extracting Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/11-1-5-end-of-topic-test-extracting-metals.md) - [11.1.6 Grade 9 - Extracting Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/11-1-6-grade-9-extracting-metals.md) ### 12 Acids & Alkalis - 12.1 Acids, Alkalis & Titrations - [12.1.1 Acids and Alkali Indicators](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-1-acids-and-alkali-indicators.md) - [12.1.2 Is it an Acid or Alkali?](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-2-is-it-an-acid-or-alkali.md) - [12.1.3 The pH Scale](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-3-the-ph-scale.md) - [12.1.4 Titrations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-4-titrations.md) - [12.1.5 Titration - Practical](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-5-titration-practical.md) - [12.1.6 Titrations - Methods](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-6-titrations-methods.md) - [12.1.7 Soluble Salts](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-7-soluble-salts.md) - [12.1.8 Solubility of Salts](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-8-solubility-of-salts.md) - [12.1.9 Making Insoluble Salts](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-9-making-insoluble-salts.md) - [12.1.10 Required Practical: Separating Mixtures](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-10-required-practical-separating-mixtures.md) - [12.1.11 Reaction of Acid & Metals](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-11-reaction-of-acid-and-metals.md) - [12.1.12 Neutralisation of Acids](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-12-neutralisation-of-acids.md) - [12.1.13 Strong vs Weak Bases](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-13-strong-vs-weak-bases.md) - [12.1.14 End of Topic Test - Acids & Alkalis](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-14-end-of-topic-test-acids-and-alkalis.md) - [12.1.15 Grade 9 - Acids & Alkalis](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-15-grade-9-acids-and-alkalis.md) - [12.1.16 Exam-Style Questions - Neutralisation & Titrations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/12-1-16-exam-style-questions-neutralisation-and-titrations.md) ### 13 Chemical Tests - 13.1 Identifying Gases - [13.1.1 Hydrogen](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-1-1-hydrogen.md) - [13.1.2 Oxygen](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-1-2-oxygen.md) - [13.1.3 Carbon Dioxide](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-1-3-carbon-dioxide.md) - [13.1.4 Chlorine](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-1-4-chlorine.md) - [13.1.5 Ammonia](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-1-5-ammonia.md) - 13.2 Testing Anions, Cations & Water - [13.2.1 Flame Tests](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-1-flame-tests.md) - [13.2.2 Flame Test - Practical](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-2-flame-test-practical.md) - [13.2.3 Metal Hydroxides](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-3-metal-hydroxides.md) - [13.2.4 Testing Cations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-4-testing-cations.md) - [13.2.5 Testing for Aqueous Cations](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-5-testing-for-aqueous-cations.md) - [13.2.6 Testing Carbonates](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-6-testing-carbonates.md) - [13.2.7 Testing Halides](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-7-testing-halides.md) - [13.2.8 Testing for Carbonate and Halides](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-8-testing-for-carbonate-and-halides.md) - [13.2.9 Testing Sulfates](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-9-testing-sulfates.md) - [13.2.10 Testing Sulfates 2](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-10-testing-sulfates-2.md) - [13.2.11 Testing Water](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-11-testing-water.md) - [13.2.12 Testing Water Purity](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-12-testing-water-purity.md) - [13.2.13 End of Topic Test - Chemical Tests](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-13-end-of-topic-test-chemical-tests.md) - [13.2.14 Grade 9 - Chemical Tests](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-14-grade-9-chemical-tests.md) - [13.2.15 Exam-Style Questions - Identifying Gases & Ions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/13-2-15-exam-style-questions-identifying-gases-and-ions.md) ### 14 Physical Chemistry - 14.1 Energetics - [14.1.1 Energy Conservation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-1-energy-conservation.md) - [14.1.2 Exothermic Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-2-exothermic-reactions.md) - [14.1.3 Endothermic Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-3-endothermic-reactions.md) - [14.1.4 Heat Changes](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-4-heat-changes.md) - [14.1.5 Calculating Heat Energy Transferred](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-5-calculating-heat-energy-transferred.md) - [14.1.6 Molar Enthalpy Change](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-6-molar-enthalpy-change.md) - [14.1.7 Reaction Profiles](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-7-reaction-profiles.md) - [14.1.8 Reaction Profiles - Catalysed vs Uncatalysed](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-8-reaction-profiles-catalysed-vs-uncatalysed.md) - [14.1.9 Exam-Style Questions - Reaction Profiles](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-9-exam-style-questions-reaction-profiles.md) - [14.1.10 Chemical Bonds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-10-chemical-bonds.md) - [14.1.11 Bond Energies](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-1-11-bond-energies.md) - 14.2 Rates of Reaction - [14.2.1 Reaction Practicals - Measuring Gas Production](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-2-1-reaction-practicals-measuring-gas-production.md) - [14.2.2 Reaction Practicals - Observing a Colour Change](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-2-2-reaction-practicals-observing-a-colour-change.md) - [14.2.3 Rate of Reaction - Collision Theory](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-2-3-rate-of-reaction-collision-theory.md) - [14.2.4 Rate of Reaction - Key Factors](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-2-4-rate-of-reaction-key-factors.md) - [14.2.5 Rate of Reaction - Catalysts](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-2-5-rate-of-reaction-catalysts.md) - [14.2.6 End of Topic Test - Energetics & Rates](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-2-6-end-of-topic-test-energetics-and-rates.md) - [14.2.7 Grade 9 - Energetics & Rates](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-2-7-grade-9-energetics-and-rates.md) - 14.3 Reversible Reactions & Equilibria - [14.3.1 Reversible Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-3-1-reversible-reactions.md) - [14.3.2 Dynamic Equilibrium](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-3-2-dynamic-equilibrium.md) - [14.3.3 Conditions and Equilibrium](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-3-3-conditions-and-equilibrium.md) - [14.3.4 Equilibrium Position - Temperature](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-3-4-equilibrium-position-temperature.md) - [14.3.5 Equilibrium Position - Pressure](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-3-5-equilibrium-position-pressure.md) - [14.3.6 End of Topic Test - Equilibria](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/14-3-6-end-of-topic-test-equilibria.md) ### 15 Organic Chemistry - 15.1 Hydrocarbons - [15.1.1 Crude Oil](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-1-crude-oil.md) - [15.1.2 Properties of Hydrocarbons](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-2-properties-of-hydrocarbons.md) - [15.1.3 Fractional Distillation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-3-fractional-distillation.md) - [15.1.4 Process of Fractional Distillation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-4-process-of-fractional-distillation.md) - [15.1.5 Fractions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-5-fractions.md) - [15.1.6 Combustion of Hydrocarbons](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-6-combustion-of-hydrocarbons.md) - [15.1.7 Impurities](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-7-impurities.md) - [15.1.8 Heavy Fractions of Crude Oil](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-8-heavy-fractions-of-crude-oil.md) - [15.1.9 Cracking](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-1-9-cracking.md) - 15.2 Alkanes & Alkenes - [15.2.1 Homologous Series](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-1-homologous-series.md) - [15.2.2 Alkanes](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-2-alkanes.md) - [15.2.3 Smallest Alkanes](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-3-smallest-alkanes.md) - [15.2.4 Structural Isomerism](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-4-structural-isomerism.md) - [15.2.5 Structure of Alkenes](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-5-structure-of-alkenes.md) - [15.2.6 The Shortest Alkenes](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-6-the-shortest-alkenes.md) - [15.2.7 Alkene Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-7-alkene-reactions.md) - [15.2.8 Types of Alkene Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-8-types-of-alkene-reactions.md) - [15.2.9 Q5 - Alkene Reactions](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-2-9-q5-alkene-reactions.md) - 15.3 Alcohols - [15.3.1 Alcohols](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-3-1-alcohols.md) - [15.3.2 Smallest Alcohols](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-3-2-smallest-alcohols.md) - [15.3.3 Combustion of Alcohols](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-3-3-combustion-of-alcohols.md) - [15.3.4 Oxidisation of Ethanol](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-3-4-oxidisation-of-ethanol.md) - [15.3.5 Fermentation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-3-5-fermentation.md) - [15.3.6 Ethanol Hydration](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-3-6-ethanol-hydration.md) - [15.3.7 Fermentation vs Hydration of Ethene](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-3-7-fermentation-vs-hydration-of-ethene.md) - 15.4 Carboxylic Acids - [15.4.1 Carboxylic Acids](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-4-1-carboxylic-acids.md) - [15.4.2 Smallest Carboxylic Acids](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-4-2-smallest-carboxylic-acids.md) - [15.4.3 Reactions of Carboxylic Acids](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-4-3-reactions-of-carboxylic-acids.md) - 15.5 Esters - [15.5.1 Esters](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-5-1-esters.md) - [15.5.2 Ethyl Ethanoate](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-5-2-ethyl-ethanoate.md) - 15.6 Synthetic Polymers - [15.6.1 Polymers](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-6-1-polymers.md) - [15.6.2 Addition Polymerisation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-6-2-addition-polymerisation.md) - [15.6.3 Examples of Addition Polymerisation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-6-3-examples-of-addition-polymerisation.md) - [15.6.4 Problems With Polymers](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-6-4-problems-with-polymers.md) - [15.6.5 Condensation Polymerisation](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-6-5-condensation-polymerisation.md) - 15.7 End of Topic - Organic Chemistry - [15.7.1 End of Topic Test - Organic Chemistry](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-7-1-end-of-topic-test-organic-chemistry.md) - [15.7.2 Grade 9 - Organic Chemistry](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-7-2-grade-9-organic-chemistry.md) - [15.7.3 Exam-Style Questions - Organic Compounds](https://senecalearning.com/en-gb/revision-notes/igcse/chemistry/edexcel-igcse/higher/15-7-3-exam-style-questions-organic-compounds.md)