IGCSE Science - Combined (0653) — May–June 2023, Paper 43

Fig. 1.1 is a diagram of the male reproductive system in humans, with parts A–E. Complete Table 1.1 to show the letter, name and function of some of these parts. Given rows: ?…

Dilute sulfuric acid is electrolysed using carbon electrodes (Fig. 2.1); bubbles of gas form at both electrodes. The ionic equation for the reaction at the positive electrode is…

Fig. 3.1 shows a football player kicking a football; the ball travels straight up then falls and stops. Fig. 3.2 is a speed–time graph of the ball after leaving the player's foot…

Fig. 4.1 is a diagram of a palisade cell and a root hair cell (NOT TO SCALE). State the name of two structures visible in both the palisade cell and the root hair cell in Fig. 4.1.

Solid ammonium nitrate, NH4NO3, dissolves to form aqueous ammonium nitrate. Name the solute and the solvent in aqueous ammonium nitrate.

Fig. 6.1 shows an electric fan and a lighting unit with two lamps, connected to a car battery. State the type of circuit connection for the fan and lighting unit.

Fig. 7.1 shows the structure of the human heart (septum labelled). Draw a label line and the letter X on Fig. 7.1 to show one atrium.

Cracking decane, C10H22, forms three compounds (Fig. 8.1): ethene (C2H4), butane (C4H10) and butene (C4H8). State the two compounds shown in Fig. 8.1 that turn aqueous bromine…

Fig. 9.1 represents a sound wave travelling through air between two people (pressure against distance). Describe in terms of particle separation what the peaks and troughs on the…