Chemistry 9701/06 Oct Nov 2006 | Cambridge AS Level Past Papers With Mark Scheme

1. Biochemistry: Understanding DNA structure, the role of mRNA, differences between DNA and RNA, and the factors influencing protein tertiary structure, including the effects of mercury on proteins.
2. ATP and Energy: Exploring ATP structure and the hydrolysis process, active transport mechanisms, and the use of ATP in biological functions like muscle contraction and protein synthesis.
3. Environmental Chemistry: Studying the formation of ozone, the impact of chlorofluorocarbons (CFCs) on ozone depletion, and the various environmental consequences of SO₂ emissions.
4. Gas Chromatography: Understanding the mechanism behind gas-liquid chromatography (GLC), its applications in detecting organic materials, and interpreting chromatograms to identify compounds.
5. Phase Equilibria: Learning about azeotropes, deviations from Raoult’s law, and how temperature and pressure influence mixtures of liquids, including hydrogen chloride and water.
6. Spectroscopy: Analyzing mass spectra, NMR spectra, and infrared (IR) spectra to identify organic compounds, with a focus on determining the composition of mixtures and tracing specific contaminants.
7. Transition Elements: Exploring the properties and reactions of manganese, including its oxidation states and how complexes of iron and chromium behave in different conditions.
8. Nickel and Polydentate Ligands: Investigating the uses of nickel in catalysis and the role of crown ethers in metal extraction, including the characteristics that make these ligands effective.
9. Nickel Complexes: Understanding the isomerism of nickel complexes, particularly with phosphines and bromines, and the implications for coordination chemistry.