IGCSE Science - Combined (0653) — May–June 2025, Paper 31
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 plant root hair cell. Name the part labelled X on Fig. 1.1.
Answer this question and get it marked →Fig. 2.1 shows the structure of a human heart. The arrows in Fig. 2.1 show the direction of blood flow through the heart. Use letters P-S to complete the sentences about the heart…
Answer this question and get it marked →Nutrition is one of the characteristics of living organisms. Define nutrition.
Answer this question and get it marked →Iron is a metal. Fig. 4.1 shows the three physical states of iron. A box labelled 'solid' is connected to a box labelled 'liquid' by arrow A (pointing from solid to liquid). The…
Answer this question and get it marked →Potassium and magnesium are metals. A solid compound contains potassium ions. Describe the use of a flame test to identify potassium ions.
Answer this question and get it marked →The formulas of some compounds of carbon are shown. C2H4 CaCO3 CH4 CO CO2 Use the formulas of these compounds to answer the following questions. Each formula may be used once,…
Answer this question and get it marked →Fig. 7.1 shows an electric motorcycle moving to the right (direction of motion). On Fig. 7.1, draw an arrow to show the direction of the air resistance acting on the motorcycle.…
Answer this question and get it marked →Some cars are powered by petrol (gasoline) engines made of iron. Petrol burns inside the engine at a temperature of 1800 °C. Iron melts at a temperature of 1538 °C. Suggest why…
Answer this question and get it marked →A spacecraft is on a journey to the planet Saturn. Fig. 9.1 shows a circuit for an electric motor used in the spacecraft. State the name and purpose of component C. name…
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