IGCSE Science - Combined (0653) — October–November 2024, Paper 33

(a) Fig. 1.1 shows the alimentary canal and associated organs of a human, with structures labelled A (oesophagus), B (stomach), C (small intestine), D (liver) and E (mouth).…

A student investigates the rate of reaction between pieces of calcium metal and dilute hydrochloric acid. The mass is recorded every 30 s during the reaction. Fig. 2.1 shows the…

(a) Fig. 3.1 shows the electrical symbol for a circuit component (a circle containing the letter M). State the name of the component.

(a) Fig. 4.1 is a diagram of the circulatory system in humans where the arrows show the direction of blood flow. Structure X (the septum) and structure Y (the pulmonary artery)…

(a) Complete the sentences about air. Use the words from the list. Each word may be used once, more than once or not at all. compound methane mixture nitrogen oxygen • Air is a…

Fig. 6.1 shows a horse pulling a cart along a flat, horizontal road. The horse and cart move forward at a constant speed of 3.2 km / h. (a) Complete the sentences about the horse…

Plants manufacture carbohydrates by the process of photosynthesis. The carbohydrates are then stored as starch in the leaves. (a) Three plants of the same type, A, B and C, are…

Fig. 8.1 shows apparatus for the electrolysis of dilute sulfuric acid using inert electrodes (a glass container of dilute sulfuric acid with two electrodes connected to a battery,…

Fig. 9.1 shows a candle made of wax (with a flame and wax labelled). (a)(i) On Fig. 9.1, draw and label a force arrow to show the weight of the candle.