Cambridge IGCSE Chemistry 0620: Comprehensive Notes
Cambridge IGCSE Chemistry 0620: Comprehensive Topic Guide
1. States of Matter and Diffusion
- Properties, changes of state, diffusion explained using particle theory.
2. Atoms, Elements, and Compounds
- Atomic structure, isotopes, periodic table patterns, definitions of element/compound/mixture.
3. Bonding and Structure
- Ionic, covalent, metallic bonding; properties of substances; structures like diamond, graphite.
4. Chemical Formulae and Calculations
- Relative masses (Ar, Mr), moles, gas volumes, concentration, empirical/molecular formulae.
5. Electrochemistry and Fuel Cells
- Electrolysis, electrode products, fuel cell reactions, advantages/disadvantages.
6. Energetics (Exothermic and Endothermic)
- Definitions, bond energy calculations, energy diagrams.
7. Chemical Changes and Rates
- Factors affecting rates (surface area, temperature, concentration), collision theory, catalysts.
8. Reversible Reactions and Equilibrium
Cambridge IGCSE Chemistry 0620: Comprehensive Notes
- Characteristics of equilibrium, Haber process, Contact process, Le Chatelier's Principle.
9. Redox (Oxidation-Reduction)
- Oxidation, reduction, identifying redox reactions, oxidizing and reducing agents.
10. Acids, Bases, and Salts
- Reactions of acids with metals, bases, carbonates; pH scale; preparation of salts.
11. Oxides and Salts
- Acidic/basic/neutral/amphoteric oxides, preparation methods for soluble and insoluble salts.
12. The Periodic Table and Periodicity
- Trends across periods and down groups, transition metals, noble gases.
13. Metals: Properties, Reactivity, Uses, and Extraction
- Physical/chemical properties of metals, alloys, reactivity series, corrosion protection.
14. Extraction of Metals
- Methods of metal extraction (iron by blast furnace, aluminum by electrolysis).
15. Chemistry of the Environment
- Water treatment, air pollution sources and effects, global warming, greenhouse gases, fertilisers.
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Cambridge IGCSE Chemistry 0620: Comprehensive Notes
Each topic includes typical past paper questions, model full-mark answers, and concise explanations designed for
IGCSE Extended Chemistry.