IGCSE Chemistry (0620) — May–June 2024, Paper 63
4 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →A sample of rock salt contains sodium chloride, sand and mud. Sodium chloride is soluble in water. Sand and mud are insoluble in water. A student obtains dry crystals of pure…
Answer this question and get it marked →A student investigates the rate at which hydrogen gas is made when magnesium ribbon reacts with dilute ethanoic acid at two different temperatures. The student does two…
Answer this question and get it marked →A student tests two substances: solid K and solution L. Tests on solid K. Solid K is copper(II) carbonate. Complete the expected observations. (a) The student adds about 5 cm3 of…
Answer this question and get it marked →Iron rusts slowly when exposed to water and air. There is an increase in mass when iron rusts as the insoluble solid hydrated iron(III) oxide forms. Cast iron, mild steel and…
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