IGCSE Sciences - Co-Ordinated (0654) — May–June 2023, Paper 41
12 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 cross-section of skin with parts labelled A, B, C, D, E (and an arteriole and capillary labelled). State the letter in Fig. 1.1 that identifies a part:…
Answer this question and get it marked →Fig. 2.1 shows the three states of matter (solid → liquid → gas) with the transitions melting, condensing and others. Complete the labels on Fig. 2.1 (the unlabelled transitions:…
Answer this question and get it marked →An Olympic triathlon consists of a 1500 m swim, a 40 km cycle ride and a 10 km run. Fig. 3.1 shows an athlete swimming at constant speed, with forces A and B acting. Describe how…
Answer this question and get it marked →Oxygen is one of the products of photosynthesis. Complete the balanced symbol equation for photosynthesis: ...... + ...... →(light/chlorophyll)→ ...... + 6O2.
Answer this question and get it marked →Fig. 5.1 shows a diagram of a lithium atom (nucleus containing ... and ...; outer particle ...). Complete the labels on Fig. 5.1.
Answer this question and get it marked →Fig. 6.1 shows a boiler that uses combustion of natural gas to heat water. Natural gas is a non-renewable energy source. Describe one environmental impact of using natural gas in…
Answer this question and get it marked →Fig. 7.1 shows the development of a strain of antibiotic resistant bacteria (stage 1: antibiotic given; stage 2). Describe what happens to the bacteria during stage 1 in Fig. 7.1.
Answer this question and get it marked →A student investigates the rate of reaction between dilute hydrochloric acid, HCl, and magnesium (Fig. 8.1). Magnesium chloride, MgCl2, and hydrogen gas, H2, are made. Construct…
Answer this question and get it marked →A student investigates how the resistance of a wire changes with length (Fig. 9.1, cell 1.5 V, ammeter, ruler, crocodile clips). When the wire is made longer, the reading on the…
Answer this question and get it marked →Fig. 10.1 shows two red blood cells after immersion in different solutions for an hour. Cell A was immersed in a concentrated salt solution; cell B in blood plasma. Complete the…
Answer this question and get it marked →Look at the structures of the carbon compounds A–E shown in Fig. 11.1 (A is ethene C2H4; B is ethanol; C is ethane; D and E other structures). State which compound is made by the…
Answer this question and get it marked →A student investigates the penetrating abilities of ionising radiation (Fig. 12.1: source, shielding material, detector, counter). Table 12.1 shows counts in 1 minute: no material…
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