Chemistry 9701/01 May June 2005 | Cambridge AS Level Past Papers With Mark Scheme

1. Identifying hydrocarbons and reaction products in practical applications like burning, with analysis of volumes of gases produced to determine molecular formulas.
2. Reactions and stoichiometry involving nitrogen production in airbags, including the calculation of moles of nitrogen gas produced from sodium azide.
3. Periodic trends: Determining which element is likely to be in Group IV based on ionization energy data, and understanding molecular shapes and bond strengths in halogen compounds.
4. Environmental chemistry: Investigating the effect of pollutants like sulfur dioxide, the impact of carbon monoxide on air quality, and the destruction of the ozone layer by bromomethane.
5. Electrochemical processes: Understanding the role of catalysts in the production of ammonia, the Haber process, and the conditions that optimize ammonia yield.
6. Chemical reactions and identification: Understanding the reactivity of hydrocarbons like ethene and the identification of compounds like steroids and esters used in medical treatments.
7. Polymer chemistry: Identifying different polymerization processes for materials like polyethylene, and determining the results of ester hydrolysis in cosmetic products.
8. Reaction mechanisms: Identifying the mechanisms involved in reactions such as electrophilic addition and nucleophilic substitution, and understanding their relevance in industrial applications like sun protection cream synthesis.