Chemistry 9701/13 Oct Nov 2013 | Cambridge AS Level Past Papers With Mark Scheme

1. Oxidation number changes in decomposition reactions of compounds like ammonium nitrate, emphasizing redox transformations.
2. Application of cryolite in aluminum extraction by electrolysis to lower melting points and improve ion mobility.
3. Stoichiometric and oxidation state analysis in redox titrations involving transition metals like vanadium and thallium.
4. Ionization energy trends and their role in oxidation reactions, with examples of element-specific energy sequences.
5. Reaction kinetics and factors influencing reaction rates, such as concentration and activation energy effects.
6. Free radical substitution mechanisms for halogenation of hydrocarbons, analyzing energy profiles and reactive intermediates.
7. Ideal gas equation applications for molar mass determination and gas behavior analysis under varying conditions.
8. Structural diversity in chemical bonding, comparing pure and mixed bonding types in compounds like magnesium oxide and ice.
9. Reactivity of halogenoalkanes and alcohols with halogens and reagents like PCl5, focusing on substitution and elimination outcomes.
10. Isomer enumeration for compounds with functional groups like bromides and alcohols, integrating stereochemistry considerations.