Chemistry 0620/33 Oct Nov 2024 | Cambridge IGCSE Past Papers With Mark Scheme

1. Periodic Table and Element Properties | Identifying elements based on flame tests, ion formation, electron shells, and their chemical reactivity.

2. Molecular Structures and Bonding | Drawing dot-and-cross diagrams for water, explaining polymerization of ethene, and describing ionic bonding properties.

3. Water Pollution and Treatment | Identifying pollutants, their effects, calculating ion concentrations, and explaining substances used in water purification.

4. Organic Chemistry and Homologous Series | Identifying functional groups, deducing molecular formulas, describing trends in alcohol boiling points, and ethanol production methods.

5. Halogens and Reactivity Trends | Predicting melting points, explaining displacement reactions, and writing balanced equations for halogen reactions.

6. Metals and Reactivity | Determining electron configurations, explaining metal reactivity with acids, and analyzing redox reactions.

7. Acids, Bases, and Salts | Preparing zinc chloride crystals, identifying acid ions, explaining exothermic reactions, and interpreting reaction pathway diagrams.

8. Rates of Reaction and Electrolysis | Investigating concentration effects on reaction time, predicting changes due to particle size, and describing molten magnesium chloride electrolysis.