IGCSE Sciences - Co-Ordinated (0973) — October–November 2024, 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 shows a diagram of the alimentary canal. [Fig. 1.1: Diagram of the human alimentary canal with parts labelled A (mouth/teeth), B, C, D (pancreas), E, F (small intestine…
Answer this question and get it marked →Describe the arrangement and movement of particles in a solid, a liquid and a gas.
Answer this question and get it marked →A graphite pencil lead has a length of 6.50 cm, a width of 0.200 cm and a height of 0.300 cm. Show that the volume of the pencil lead is 1.95 cm³.
Answer this question and get it marked →Fig. 4.1 shows how a person's heart rate changes during and after exercise. [Fig. 4.1: Graph showing heart rate (bpm) against time (minutes). Heart rate rises from 70 bpm at rest…
Answer this question and get it marked →Describe the structure of an atom.
Answer this question and get it marked →A mobile phone is placed on a wireless charging pad. Fig. 6.1 shows the charging pad. Light travels from a glass screen into air at an angle. Complete the table to show how the…
Answer this question and get it marked →Potato cylinders are placed in sucrose solutions of different concentrations. Table 7.1 shows the results. concentration of sucrose (mol/dm³) initial mass (g) final mass (g)…
Answer this question and get it marked →Zinc reacts with dilute nitric acid to produce zinc nitrate and hydrogen gas. Write a balanced equation for this reaction.
Answer this question and get it marked →Tritium (³₁H) is a radioactive isotope of hydrogen that undergoes beta-minus (β⁻) decay. Write a nuclear equation for the beta-minus decay of tritium.
Answer this question and get it marked →Fig. 10.1 shows a lake affected by eutrophication caused by nitrates from fertilisers. [Fig. 10.1: Diagram of a lake showing algal bloom on the surface, dead and decomposing…
Answer this question and get it marked →Aluminium is extracted from aluminium oxide (Al₂O₃) by electrolysis. The percentage of Al in Al₂O₃ by mass is 52.9%. Calculate the mass of aluminium that can be extracted from…
Answer this question and get it marked →A car brakes to a halt. Fig. 12.1 shows a speed–time graph for the car braking. [Fig. 12.1: Speed–time graph showing speed decreasing linearly from 9.0 m/s to 0 over 6.0 s.] State…
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