Science Combined 0653/31 Oct Nov 2024 | Cambridge IGCSE Past Papers With Mark Scheme

1. Plant Reproduction & Food Webs | Flower structure identification, fertilization process in plants, and categorization of organisms in a food web.

2. Reaction Rates & Chemical Bonding | Effect of acid concentration on reaction rates, methods to change reaction speed, and dot-and-cross diagram for water.

3. Forces & Density Calculations | Weight of a wooden block, volume and density calculations, and gravitational potential energy concepts.

4. Blood & Nutrition | Differences in anemic vs. normal blood, blood component functions, sources of dietary iron, and effects of exercise on pulse rate.

5. Periodic Table & Element Properties | Identifying elements based on atomic number, noble gas properties, and their lack of reactivity.

6. Copper & States of Matter | Properties of copper for wiring, changes in state, molecular arrangement in solids vs. gases, and reflection of light in a mirror.

7. Water Transport in Plants & Carbon Cycle | Identifying leaf structures, pathway of water absorption, and the role of photosynthesis in reducing CO₂.

8. Fuels & Hydrocarbons | Types of fossil fuels, fractional distillation uses, hydrocarbon classification, and chemical tests for unsaturated compounds.

9. Electric Circuits & Resistance | Drawing a circuit diagram, identifying circuit components, and calculating the resistance of a lamp.