Chemistry 9701/11 May June 2021 | Cambridge AS Level Past Papers With Mark Scheme

1. Concepts in chemical reactions and thermodynamics, such as understanding of bond energy, enthalpy changes, and molecular behavior in reactions involving hydrogen iodide, ammonia, and others.
2. Use of equilibrium constants, catalytic processes, and the effect of temperature on reaction rates and equilibria, such as in the Haber process and other reactions.
3. Analysis of molecular structures and isomerism, including concepts like cis-trans and optical isomerism, and applying this knowledge to organic compounds like limonene and various halogenated compounds.
4. Study of the properties of elements, including transition metals and their coordination complexes, explaining oxidation numbers and geometries in different complexes.
5. Understanding of chemical bonding and molecular geometry with specific reference to the shape of molecules like PCl3 and [PCl4]+, and their corresponding bond angles.
6. Solubility tests, including the reaction of metals, halides, and oxides in different solvents, along with applications in real-world chemical processes such as the formation of ammonia and other commercial chemicals.