Chemistry 9701/11 May June 2017 | Cambridge AS Level Past Papers With Mark Scheme

### Key Topics:
1. Atomic Structure and Isotopes:
- Determining the number of protons, neutrons, and electrons in isotopes, as well as calculating the relative atomic mass using isotopic abundances.

2. Chemical Reactions and Stoichiometry:
- Identifying the formula of compounds and writing balanced combustion reactions for alkanes and alkenes.
- Calculating the number of atoms deposited via electrolysis and understanding factors affecting reaction rates.

3. Bonding and Molecular Structure:
- Understanding the types of bonds in molecules and the effects of molecular shape on polarity and dipole moments.
- Analyzing the structure of compounds such as SF6, NCl3, and H2S.

4. Thermodynamics:
- Using the provided data to calculate enthalpy changes, including combustion reactions and reactions with gases.

5. Redox Reactions and Electrochemistry:
- Understanding oxidation states, electron transfer, and balancing reactions in various oxidation states for substances like chlorine and manganese.

6. Organic Chemistry:
- Analyzing organic reaction mechanisms such as nucleophilic substitution, electrophilic addition, and esterification.
- Identifying products of reactions like alcohol oxidation, and reactions involving halogenoalkanes.

7. Periodic Trends:
- Understanding trends in ionization energies, atomic size, and reactivity in the periodic table, particularly in Group 17 and Group 2.

8. Environmental and Industrial Chemistry:
- Identifying pollutants and understanding their formation, including nitrogen oxides and sulfur dioxide in atmospheric reactions.