IGCSE Science - Combined (0653) — May–June 2025, Paper 43
9 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 is a photomicrograph of human blood. Three components are labelled: X (a small biconcave-looking cell with no nucleus, very numerous), Z (a larger cell with a prominent…
Answer this question and get it marked →Fig. 2.1 is a diagram of a cross-section through a leaf. The diagram shows, from top to bottom: a thin outer layer over the top (G) and the upper epidermis (F); a row of tall,…
Answer this question and get it marked →Fig. 3.1 shows part of the breathing system in humans. It shows a branching airway leading to clusters of small rounded sacs. One of the small tubes leading to a cluster of sacs…
Answer this question and get it marked →Table 4.1 shows information about three compounds, A, B and C. compound melting point / C boiling point / C electrical conductivity --- --- --- --- A 801 1465 conducts only when…
Answer this question and get it marked →Chlorine is in Group VII of the Periodic Table. Chlorine gas is bubbled through aqueous bromide ions. A reaction occurs and an orange-brown solution forms. Name the substance that…
Answer this question and get it marked →Ethene is an alkene. The structure of ethene, C2H4, is shown in Fig. 6.1 (a displayed formula with two carbon atoms joined by a C=C double bond, each carbon also bonded to two…
Answer this question and get it marked →Fig. 7.1 shows a toy car, powered by a battery. The mass of the car is 0.64 kg. Complete the sentences about mass and weight. Mass is a measure of the quantity of ........... in…
Answer this question and get it marked →Fig. 8.1 shows a pan of water being heated on an electric hotplate (the pan sits on the hotplate, with the water boiling and steam rising from the surface). Convection occurs in…
Answer this question and get it marked →State the approximate age of the Universe.
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