Chemistry 9701/22 May June 2014 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculation of isotopic abundances and relative atomic mass for bromine isotopes, empirical formula determination for ABr₃, reaction stoichiometry.
2. Reaction behaviors of Period 3 elements with oxygen, equations for magnesium and sulfur, amphoteric reactions of aluminum oxide with acids and bases.
3. Shapes and bond angles in PCl₅, electron geometry, hybridization concepts, oxidation and reduction in manganate reactions with ethanedioate.
4. Structural and bonding explanations for variations in melting points across Period 3, metallic, molecular, and network covalent structures, and relative ionization energies.
5. Mechanisms of free radical substitution in ethane with chlorine, geometry and bond angle differences between alkanes and alkenes, explanation of alkane unreactivity.
6. Identification and naming of C₆H₁₂ hydrocarbons that decolorize bromine, reactivity with potassium manganate(VII), Tollens’ reagent, and DNPH reagent for carbonyl groups.