Chemistry 9701/13 Oct Nov 2017 | Cambridge AS Level Past Papers With Mark Scheme

### Key Topics:
1. Empirical Formula and Molecular Structures:
- Identifying empirical formulas.
- Bonding and molecular geometry, including shapes and bond angles for compounds like SiCl₄ and PCl₃.
- Understanding coordination numbers in ionic lattices like NaCl.

2. Gas Laws and Thermodynamics:
- Applying the ideal gas law to calculate temperature, pressure, and volume of gases.
- Calculating enthalpy changes and understanding reactions involving sulfur oxides.

3. Redox Reactions:
- Understanding oxidation and reduction in reactions like the lead-acid battery reaction.
- Interpreting dynamic equilibrium and calculating equilibrium constants (Kp).

4. Organic Chemistry:
- Understanding organic reaction mechanisms, such as nucleophilic substitution and electrophilic addition.
- Identifying products of reactions involving alkenes and alcohols, and understanding stereoisomerism.

5. Periodic Trends and Group Properties:
- Trends in ionization energy, melting points, and reactivity of elements in Group 2 and Group 17.
- Analyzing reactions with halogens, including the formation of halogenated products.

6. Catalysis and Energy Diagrams:
- The effects of temperature and catalysts on reaction rates.
- Understanding reaction pathway diagrams and activation energies.