Chemistry 9701/21 May June 2023 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculation of neutrons, electrons, and identification of the sub-shell with the lowest energy in tellurium.
2. Construction of the equation for the first ionization energy of tellurium and the explanation for trends in ionization energies.
3. Explanation for the octahedral geometry of TeFx molecules with 90° bond angles.
4. Reactions of TeFx with water, including the construction of the equation and identifying the reaction type.
5. Calculation of enthalpy change of neutralization and the effect of experimental conditions on reaction results.
6. Reactions of chlorine with various compounds, including the description of products, mechanisms, and mass spectrum analysis.