IGCSE Chemistry (0971) — October–November 2024, Paper 42
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Table 1.1 shows the formulae of molecules A to I: A=C2H4, B=C2H5OH, C=CO, D=CO2, E=Cl2, F=NO2, G=N2, H=O2, I=SO2. State which of the molecules A to I is an element with a triple…
Answer this question and get it marked →Aluminium is manufactured by the electrolysis of aluminium oxide. State the name of the main ore of aluminium.
Answer this question and get it marked →Sulfur forms two chlorides, P and Q. Chloride P has the formula S2Cl2. Chloride Q has the formula SCl2. Both chlorides are covalently bonded and have low melting points. Suggest,…
Answer this question and get it marked →Silver bromide, AgBr, is made when aqueous silver ethanoate, CH3COOAg, is added to aqueous sodium bromide, NaBr: CH3COOAg + NaBr → CH3COONa + AgBr. Complete the ionic equation for…
Answer this question and get it marked →Alkenes are manufactured by cracking larger alkane molecules. State the source of the large alkane molecules used in cracking.
Answer this question and get it marked →Fig. 6.1 shows part of the structure of a polyamide. On Fig. 6.1, draw a circle around one amide linkage.
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