IGCSE Science - Combined (0653) — May–June 2023, Paper 32
9 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 is a diagram of a human heart with labels A, B, C, D and E pointing to different parts. State the letter in Fig. 1.1 that identifies the: right atrium septum
Answer this question and get it marked →A student investigates sodium chloride, NaCl, by making a concentrated aqueous solution and electrolysing it (Fig. 2.1: a low voltage d.c. supply with a negative and a positive…
Answer this question and get it marked →Fig. 3.1 shows a speed–time graph (speed / m/s against time / s, time axis marked 0, 20, 40, 60, 80) for a car on part of a journey. Deduce the time interval for which the car is…
Answer this question and get it marked →A student investigates photosynthesis: adds indicator solution to three test-tubes A, B and C; puts one leaf into B and one into C; puts a bung into each; wraps test-tube C with…
Answer this question and get it marked →Copper is a transition element. State one physical property and one chemical property of copper.
Answer this question and get it marked →Moving water has kinetic energy. State two energy resources which supply useful energy from moving water.
Answer this question and get it marked →Fig. 7.1 shows an incomplete food web (algae → anchovy, shrimp, mussel; bluefish; crab). The bluefish eats the anchovy and the shrimp. Draw two arrows on Fig. 7.1 to show these…
Answer this question and get it marked →Methane, CH4, is the main constituent of natural gas. Complete the word equation for the complete combustion of methane. methane + → + water
Answer this question and get it marked →Fig. 9.1 shows an electrical circuit with a loudspeaker and a component X. The potential difference across the loudspeaker is 9 V and the current in the loudspeaker is 1.5 A.…
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