IGCSE Sciences - Co-Ordinated (0654) — October–November 2024, Paper 62
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 shows a photograph of a shark's tooth, with points A (top, the tip) and B (bottom) labelled. In the box, make a large, detailed, pencil drawing of the tooth in Fig. 1.1.
Answer this question and get it marked →Plaque is a layer of bacteria which forms on teeth. Plaque causes dental decay by producing acid that reduces the pH of the saliva in the mouth. Some students investigate the…
Answer this question and get it marked →A student investigates the effect of temperature on the volume of a gas. The student pulls approximately 50 cm^3 of air into a glass syringe, seals the end of the syringe with a…
Answer this question and get it marked →A student investigates the identity of a metal H. The student: (step 1) adds metal H to a beaker of cold water; (step 2) tests to identify the gas given off; (step 3) does a flame…
Answer this question and get it marked →A student investigates the combined resistance of different combinations of identical resistors. The student assembles the circuit shown in Fig. 5.1 (circuit 1: a cell, a switch…
Answer this question and get it marked →A student investigates the oscillations (swings) of a pendulum. A pendulum consists of a bob supported by thin thread or string. The period T of a pendulum is the time taken for…
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