IGCSE Sciences - Co-Ordinated (0654) — October–November 2024, Paper 43

Fig. 1.1 is a diagram of the gas exchange system, with parts labelled A and B and the alveoli labelled. Identify the parts labelled A and B in Fig. 1.1.

Fig. 2.1 shows the displayed formulae of some carbon compounds: A (ethene, H2C=CH2); B (ethane, H3C-CH3); C (propane, H3C-CH2-CH3); D (ethanol, H3C-CH2-OH). State which compound…

A student investigates an NTC thermistor. The student connects the thermistor in series with a cell and an ammeter. The student also connects a voltmeter to measure the potential…

Fig. 4.1 summarises one pathway of water through a plant, with a leaf, root, soil water, soil particle, processes A and B, and cells Y and Z labelled. Identify the cells labelled…

A student investigates the reaction between calcium carbonate and dilute hydrochloric acid. Fig. 5.1 shows the apparatus used (a flask of calcium carbonate and dilute hydrochloric…

Fig. 6.1 shows a car suspension system that uses four identical coil springs. The weight of the car causes compression in the springs; the length of each spring is reduced from…

Fig. 7.1 shows the structure of a villus, with parts labelled A and B. State the name and function of the part labelled A in Fig. 7.1.

Table 8.1 shows some information about the structure of atoms (particle / charge / relative mass): electron (-1, ?); neutron (?, ?); proton (?, 1). Complete Table 8.1.

Fig. 9.1 shows distance-time graphs for a car journey and a bicycle journey. The car and bicycle both start from the same point and travel in the same direction along the same…

A farmer planted some seeds. Explain why the farmer digs the soil to ensure there are air spaces in the soil before the seeds are planted.

Fig. 11.1 shows the reactivity series of some metals (sodium, magnesium, aluminium, carbon, zinc, iron, copper, from most reactive to least reactive). The element carbon is…

Fig. 12.1 shows a diagram of a nuclear power station used to generate electricity (reactor with control rod, fuel rod and moderator; boiler producing steam to a steam turbine and…