IGCSE Science - Combined (0653) — October–November 2023, Paper 31

Fig. 1.1 shows the female reproductive system in humans, with parts labelled A, B, C, D, E. State the letter in Fig. 1.1 that identifies: the cervix; where eggs are released from;…

A student dissolves sodium carbonate, Na2CO3, in water to form aqueous sodium carbonate. State a chemical test for water and the observation for a positive result.

Fig. 3.1 shows the forces acting on an aircraft in flight (lift, weight, thrust, air resistance). The aircraft has a mass of 190 000 kg. Calculate the weight of the aircraft. The…

Transpiration is loss of water vapour from plant leaves. Describe the effect of temperature on transpiration.

Copper is a transition element. Aluminium is a metal in Group III of the Periodic Table. State one general physical property of metals.

A student determines the resistance of resistor R. Fig. 6.1 shows resistor R connected in series with a battery and an ammeter; the ammeter reads 0.24 A. State the name of the…

Fig. 7.1 shows a food web (bladderwort, orchid as producers; carp, mosquito; frog, raccoon, heron; alligator). The food web is not complete. The heron eats the carp; the alligator…

Chlorine is in Group VII of the Periodic Table. A chlorine atom has 17 electrons and nucleon number 35. Complete Fig. 8.1 to show the electrons in this chlorine atom.

Many security measures are used in airports. There are seven regions of the electromagnetic spectrum. Fig. 9.1 shows an incomplete spectrum (gamma radiation, X-rays, ultraviolet,…