Chemistry 5070/12 Oct Nov 2024 | Cambridge O-Level Past Papers With Mark Scheme

1. States of Matter & Atomic Structure | Diffusion of gases, differences in molecular and giant covalent structures, isotopes, and relative atomic mass calculations.

2. Chemical Bonding & Electrical Conductivity | Ionic and covalent compounds, electrical conductivity in metals and electrolytes, movement of charged particles in solutions.

3. Stoichiometry & Molar Calculations | Empirical formulas, relative molecular masses, percentage composition, titration concentration calculations.

4. Electrolysis & Redox Reactions | Reactions at electrodes, movement of ions, half-equations, and applications of electrolysis in industry.

5. Reaction Kinetics & Equilibrium | Factors affecting reaction rates, energy profile diagrams, equilibrium shifts due to temperature changes.

6. Acids, Bases & Salts | Properties of acids and bases, pH comparisons, formation of salts, and amphoteric oxide behavior.

7. Metals & Reactivity Series | Extraction of metals from ores, rust prevention, properties of transition metals, and displacement reactions.

8. Organic Chemistry & Polymers | Hydrocarbons, cracking of petroleum, ester formation, polymerization types, and fermentation of ethanol.

9. Environmental Chemistry & Air Pollution | Effects of air pollutants, greenhouse gases, acid rain formation, and pollution control measures.