Chemistry 9701/11 Oct Nov 2016 | Cambridge AS Level Past Papers With Mark Scheme

1. Boltzmann Distribution and Activation Energy:
- Understanding the Boltzmann distribution for molecular energy and how temperature affects the energy distribution of reacting molecules.
- Identifying which diagram represents the correct shift in activation energy at different temperatures.

2. Ideal Gas Equation:
- Analyzing the units of the ideal gas equation and the implications for mole and temperature units.

3. Redox Reactions:
- Writing balanced equations for reactions involving dichromate ions and Fe²⁺ ions, and understanding the stoichiometry of the reaction.

4. Radioactive Decay:
- Identifying the correct properties of isotopes, including the resulting proton number and neutrons after a decay process.

5. Bond Angles in Organic Molecules:
- Determining bond angles in molecules like histamine, based on the molecular structure and hybridization.

6. Density of Gas Mixtures:
- Calculating the density of gas mixtures on different planets based on the percentages of different gases in the atmosphere.

7. Catalytic Reactions:
- Analyzing reactions like the catalytic oxidation of ammonia and determining energy released in the process.

8. Metal Reactions:
- Understanding the reactions of metals like sodium azide and magnesium carbonate in different environments (with heat and in the presence of sulfuric acid).

9. Chemical Identification:
- Identifying ions and compounds based on experimental reactions, such as the reaction of sodium with water or the formation of specific precipitates.

10. Organic Chemistry:
- Naming organic compounds, recognizing functional groups, and understanding mechanisms like nucleophilic substitution and elimination in reactions.
- Understanding the formation of various isomers and the reaction products when certain functional groups are subjected to different reagents.