Chemistry 9701/22 Oct Nov 2009 | Cambridge AS Level Past Papers With Mark Scheme

1. Carbon and Silicon Oxides: Explanation of the physical states of CO₂ (gas) and SiO₂ (solid) at room temperature, considering the nature of their bonds and intermolecular forces.
2. Kinetic Theory and Ideal Gas: Basic assumptions of the kinetic theory applied to ideal gases, with a specific focus on why CO₂ does not behave ideally.
3. Bonding in Sodium Chloride and Sodium Hydride: Description of ionic bonding in sodium chloride and the type of bonding in sodium hydride, with a dot-and-cross diagram.
4. Oxidation States in Hydrides: Oxidation states of magnesium, aluminium, phosphorus, and sulfur in their respective hydrides.
5. Hydride Reactions: Reactions of sodium hydride with water, the pH of solutions formed by the dissolution of various chlorides, and the bonding in sulfur dichloride.
6. Reaction of 1-Bromobutane: A stepwise mechanism for synthesizing 1-bromobutane, including equations, reagent excess, and yield calculations.
7. Polymerization of Organic Compounds: Reaction pathways for the preparation of various organic compounds, including polymerization, dehydration, and functional group transformations.
8. Identification of Alcohols and Organic Reactions: Observations and reagents for detecting propanone, reactions with sodium metal, and structural formulas of alcohols and their derivatives.
9. Dehydration and Isomerization: Identification of alcohols that form alkenes upon dehydration, and structural analysis of their isomers.
10. Preparation and Reactions of Alcohol Derivatives: Synthesis of alcohol derivatives and their reactions, including the role of acidified potassium dichromate and the resulting organic products.