Chemistry 9701/12 March 2022 | Cambridge AS Level Past Papers With Mark Scheme

1. Explanation of the first ionization energy and its trends across Periodic Table elements, including comparisons between elements like Sr and K.
2. Understanding of successive ionization energies to deduce an element's group and its electron configuration.
3. Analysis of the relationship between sulfur and phosphorus ionization energies.
4. Comparison of ionization energies of Al2+ and Na to explain the higher ionization energy of aluminum.
5. Understanding of the isotopic composition of copper, using its relative isotopic mass to deduce properties and characteristics.
6. Calculation of the number of atoms in a given mass of copper and the explanation of copper's properties in relation to its atomic structure.
7. Trends in Period 3 element properties such as melting points, bonding, and the acid-base nature of oxides and chlorides.
8. Explanation of reaction mechanisms, including those involving tennessine and its predicted trends.
9. Understanding the chemical behavior of ethers, the formation of products, and the use of thermal decomposition for analyzing molecular bonds.
10. Functional group analysis and identification in organic compounds, along with understanding isomerism, reactions with reagents, and the determination of molecular structures.