Chemistry 9701/12 Oct Nov 2009 | Cambridge AS Level Past Papers With Mark Scheme

1. Determining the molecular formula of a hydrocarbon from combustion products and predicting bond angles in molecules.
2. Investigating the trends in Group II properties, including ionization energies, and explaining the factors that influence equilibrium constants.
3. Exploring the role of catalysts in reactions, including the formation of photochemical smog and the effects of temperature on equilibrium constants.
4. Understanding chemical reactions like those of PCl₅ and the decomposition of copper oxide, and interpreting the results using mass and stoichiometry.
5. Examining the properties of halogens, their bonds, and behavior in chemical reactions like chlorination and in gas laws involving effusion times.
6. Reviewing the implications of chemical equilibrium, gas dissociation, and their behavior under different conditions such as in a catalyst or pressure adjustment.
7. Investigating molecular behavior and mechanisms in reactions like hydrogenation, oxidation, and the impact of catalysts in organic and inorganic chemistry.