IGCSE Sciences - Co-Ordinated (0654) — May–June 2023, Paper 42
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 parts of the eye with parts labelled A, B, C, D, E, F on the right and G, H on the left. State the letter in Fig. 1.1 which identifies the part that…
Answer this question and get it marked →Alkanes are saturated hydrocarbons. State what is meant by the term saturated hydrocarbon.
Answer this question and get it marked →Fig. 3.1 shows a pond skater on the surface of water. The pond skater has a mass of 0.25 g and is stationary on the water surface. g = 10 N/kg. Use the values (0 N, 0.0025 kg,…
Answer this question and get it marked →Photosynthesis is an enzyme-controlled reaction. Fig. 4.1 is a graph showing the effect of temperature on the rate of photosynthesis (rate against temperature 0–50 °C, peak then…
Answer this question and get it marked →Ammonia is made from nitrogen and hydrogen in the Haber process: N2 + 3H2 ⇌ 2NH3. State the sources of the nitrogen and hydrogen used in the Haber process.
Answer this question and get it marked →Fig. 6.1 shows the average power output over a summer's day from a solar panel (power output/kW against time of day 04:00–20:00). State the time at which the power output of the…
Answer this question and get it marked →Fig. 7.1 shows a food web (corn and mango as producers; grasshopper, rat, fruit fly, frog, dragonfly, snake, eagle). Use Fig. 7.1 to state the name of one: herbivore ...;…
Answer this question and get it marked →Copper has two isotopes, copper-63 and copper-65. Complete Table 8.1 (proton number 29; nucleon numbers 63 and 65; protons, neutrons, electrons). Given: copper-63 protons 29,…
Answer this question and get it marked →A student investigates series and parallel circuits using filament lamps. Fig. 9.1 shows the first circuit (three identical filament lamps in series with a 6.0 V supply, two…
Answer this question and get it marked →Fig. 10.1 is a diagram of a sperm cell in humans with parts X and Y labelled. Cell structure X contains unpaired chromosomes. State the two words used to describe cell structure X…
Answer this question and get it marked →Electrolysis is the breakdown of an ionic compound (molten or aqueous) by electricity. Table 11.1 shows products of electrolysis of aqueous solutions using inert electrodes…
Answer this question and get it marked →Table 12.1 shows information about three types of ionising radiation. alpha: (nature blank), high ionising effect, (penetrating blank). beta: fast-moving electron, medium, medium.…
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