IGCSE Science - Combined (0653) — October–November 2024, Paper 31

Fig. 1.1 shows the flower of a plant. The flower has labelled parts including a sepal, an ovary, and parts labelled X (a stalk-like structure topped by an anther bearing pollen)…

A student investigates the rate of reaction between solid magnesium carbonate and dilute hydrochloric acid. Fig. 2.1 shows the apparatus: a conical flask containing lumps of solid…

Fig. 3.1 shows a block of wood with dimensions 30.0 cm × 15.0 cm × 8.0 cm. The mass of the block of wood is 2.7 kg. (a)(i) Calculate the weight of the block of wood. The…

Anaemia is caused by a deficiency of iron in the diet. (a) Fig. 4.1 shows diagrams of the blood of a person without anaemia and the blood of a person with anaemia. Both show white…

Fig. 5.1 shows the first four periods of the Periodic Table with the data for the elements removed (an empty grid of boxes). (a) Element Q has proton number 4. Element R is 21% of…

Copper is a metal. (a) Copper is used to make wires for electrical circuits. State one property of copper that makes it suitable for use as a wire for electrical circuits.

(a) Fig. 7.1 shows a student's drawing of a cross-section of a leaf, with structures labelled A (upper epidermis cells), B (a vascular bundle), C (a guard cell / lower epidermis),…

(a) Complete the sentences about fuels. Use words from the list. Each word may be used once or not at all. bitumen fossil hydrocarbon methane petroleum Coal, ............ and…

Fig. 9.1 shows an electrical circuit used to investigate the resistance of a lamp. It contains a cell, an ammeter, a voltmeter, a variable resistor, a lamp and a switch. (a)…