IGCSE Sciences - Co-Ordinated (0973) — May–June 2023, Paper 62
7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →A student investigates the effect of plants and animals on their aqueous environment. Organisms that photosynthesise or respire affect the concentration of carbon dioxide…
Answer this question and get it marked →A student investigates three nutrient solutions D, E and F for the presence of reducing sugar. The student adds 2 cm3 of Benedict's solution to three test-tubes containing the…
Answer this question and get it marked →The seeds of a sycamore tree (Fig. 3.1) have 'wings' to help carry them in the wind. Fig. 3.2 shows sycamore seeds fallen from the parent tree, having travelled a horizontal…
Answer this question and get it marked →A student investigates the rate of reaction between solutions H and K. When solutions of H, K and starch are mixed, a blue-black colour is seen after a period of time; changing…
Answer this question and get it marked →A student identifies the ions present in solution L and in solution M. Table 5.1 shows cation tests: adding aqueous sodium hydroxide (a few drops, then excess) gives no…
Answer this question and get it marked →A student measures the mass M of an object using a balancing method. The object is fixed to a metre rule with its centre over the 15.0 cm mark; a pivot is placed under the 50.0 cm…
Answer this question and get it marked →A student investigates the image formed by a convex lens. The apparatus (Fig. 7.1) has a lamp, an illuminated object (a triangular hole in a card), a convex lens in a holder and a…
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