IGCSE Chemistry (0620) — October–November 2023, Paper 41
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Answer the following questions using only the gases from the list (ammonia, carbon dioxide, carbon monoxide, ethene, fluorine, oxygen, sulfur dioxide, xenon). Each gas may be used…
Answer this question and get it marked →Boron and aluminium are Group III elements. Boron has only two naturally occurring isotopes, ¹⁰B and ¹¹B. Complete Table 2.1 to show the numbers of protons, neutrons and electrons…
Answer this question and get it marked →Order of reactivity can be determined by displacement reactions. A student investigates the reactivities of four metals by carrying out a series of experiments. Each of the metals…
Answer this question and get it marked →Aqueous hydrogen peroxide, H2O2, slowly forms water and oxygen at room temperature and pressure, r.t.p. This reaction is catalysed by manganese(IV) oxide: 2H2O2(aq) → 2H2O(l) +…
Answer this question and get it marked →Methane reacts with steam to produce hydrogen gas: CH4(g) + H2O(g) ⇌ CO(g) + 3H2(g) ΔH = +200 kJ / mol The reaction takes place at 1000 °C and 100 kPa pressure. The reaction is…
Answer this question and get it marked →Ethanol is manufactured by two methods: method 1 — fermentation of aqueous glucose; method 2 — catalytic addition of steam to an alkene. Method 1 takes place at room temperature…
Answer this question and get it marked →← October–November 2023 Paper 42 · October–November 2023 Paper 33 →