Chemistry 9701/21 May June 2016 | Cambridge AS Level Past Papers With Mark Scheme

1. Analysis of ion composition, behavior of subatomic particles in an electric field, and periodic table trends including ionization energies, electronic configuration, and isotopic abundance calculations.
2. Properties of Group 2 elements and their compounds, including reactions with water, oxides, and thermal decomposition of nitrates and carbonates, with emphasis on chemical equations and observable differences.
3. Structural isomers, chain isomers, stereoisomers, and functional group identification for hydrocarbons with molecular formula C4H8, including chemical test distinctions and structural analysis.
4. Mechanistic pathways and reaction types for organic synthesis involving nucleophilic substitution, reduction, and condensation reactions, complemented by IR spectroscopy interpretation for functional group differences.
5. Advanced stereoisomerism and reaction pathways, focusing on products of oxidation reactions under varied conditions, including chiral center identification and stereochemical analysis.
6. Amphoteric and acidic oxides in periodic trends, reactivity with acids and bases, and their implications for molecular bonding, allotropy, and structural diversity.