Cambridge Notes
O Level
Chemistry
Topic 9.9.2

Chemistry 9.9.2 Notes — O Level

Cambridge O Level Chemistry (5070) revision notes — topic 9.9.2. Syllabus-aligned key concepts for CAIE exam preparation.

1. States of matter

1.1 Solids liquids and gases 3
1.2 Diffusion

2. Atoms, elements and compounds

2.1 Elements compounds and mixtures
2.2 Atomic structure and the Periodic Table
2.3 Isotopes
2.4 Ions and ionic bonds
2.5 Simple molecules and covalent bonds
2.6 Giant covalent structures
2.7 Metallic bonding

3. Stoichiometry

3.1 Formulae 1
3.2 Relative masses of atoms and molecules
3.3 The mole and the Avogadro constant

4. Electrochemistry

4.1 Electrolysis
4.2 Hydrogen–oxygen fuel cells

5. Chemical energetics

5.1 Exothermic and endothermic reactions 1

6. Chemical reactions

6.1 Physical and chemical changes
6.2 Rate of reaction
6.3 Reversible reactions and equilibrium
6.4 Redox

7. Acids, bases and salts

7.1 The characteristic properties of acids and bases
7.2 Oxides
7.3 Preparation of salts

8. The Periodic Table

8.1 Arrangement of elements
8.2 Group I properties
8.3 Group VII properties
8.4 Transition elements
8.5 Noble gases

9. Metals

9.1 Properties of metals
9.2 Uses of metals
9.3 Alloys and their properties
9.4 Reactivity series
9.5 Corrosion of metals
9.6 Extraction of metals

10. Chemistry of the environment

10.1 Water
10.2 Fertilisers
10.3 Air quality and climate 3

11. Organic chemistry

11.1 Formulae functional groups and terminology 3
11.2 Naming organic compounds
11.3 Fuels
11.4 Alkanes
11.5 Alkenes
11.6 Alcohols
11.7 Carboxylic acids
11.8 Polymers

12. Experimental techniques and chemical analysis

12.1 Experimental design
12.2 Acid–base titrations
12.3 Chromatography
12.4 Separation and purification 1
12.5 Identification of ions and gases

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