Chemistry 9701/02 Oct Nov 2003 | Cambridge AS Level Past Papers With Mark Scheme

1. Bonding and Chemical Reactions: Describing the bonding in sodium chloride crystals, explaining its electrical conductivity behavior in solid and molten states, and the process of chlorine production from brine.
2. Combustion and Emissions: Understanding the combustion of octane in cars, the gases produced in the exhaust, their effects on human health, and the catalytic converter's role in reducing harmful emissions.
3. Enthalpy Changes and Reactions: Defining standard enthalpy change of formation, calculating heat released in a reaction, and using Hess' Law to determine the enthalpy of formation for compounds.
4. Organic Chemistry Reactions: Preparing ethene from ethanol, identifying products of reactions with bromine and manganate ions, and determining the structure and reactions of alkenes.
5. Substitution and Elimination Reactions: Exploring reactions involving bromoalkanes, including substitution reactions and elimination to form alkenes, and understanding their mechanisms and products.
6. Optical Isomerism and Identification: Understanding stereoisomerism in organic compounds, identifying chiral centers, and explaining methods for distinguishing optical isomers.