IGCSE Sciences - Co-Ordinated (0973) — 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, plus an arteriole and a capillary. State the letter in Fig. 1.1 that identifies a part: of the…
Answer this question and get it marked →Fig. 2.1 shows the three states of matter (solid, liquid, gas) with the change melting between solid and liquid, and condensing between gas and liquid. Complete the labels on Fig.…
Answer this question and get it marked →An Olympic triathlon event consists of a 1500 m swim, a 40 km cycle ride and a 10 km run. Fig. 3.1 shows an athlete swimming at a constant speed, with forces A (backward) and B…
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 two labelled particle types, and a third particle type outside the nucleus). 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 is a diagram showing the development of a strain of antibiotic resistant bacteria (stage 1 antibiotic given, stage 2; key: non-resistant, resistant and dead bacteria).…
Answer this question and get it marked →A student investigates the rate of reaction between dilute hydrochloric acid, HCl, and magnesium, as shown in Fig. 8.1. Magnesium chloride, MgCl2, and hydrogen gas, H2, are made.…
Answer this question and get it marked →A student investigates how the resistance of a wire changes with length using the equipment in Fig. 9.1 (1.5 V cell, ammeter, wire, ruler, crocodile clips). The student moves the…
Answer this question and get it marked →Fig. 10.1 shows two red blood cells after they have been immersed in different solutions for an hour. Cell A was immersed in a concentrated salt solution (and appears…
Answer this question and get it marked →Look at the structures of the carbon compounds shown in Fig. 11.1 (A = ethene C2H4; B = ethanol C2H5OH; C = ethane C2H6; D = ethane-like structure; E = ethene repeat unit /…
Answer this question and get it marked →A student investigates the penetrating abilities of ionising radiation using the equipment in Fig. 12.1 (source, shielding material, detector and counter). Table 12.1 gives counts…
Answer this question and get it marked →