IGCSE Chemistry (0971) — May–June 2023, Paper 41
7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Using the equations A to J, give the letter for the equation that represents a neutralisation reaction.
Answer this question and get it marked →The symbols of the elements in Period 2 of the Periodic Table are: Li, Be, B, C, N, O, F, Ne. Use the symbols to answer. Each symbol may be used once, more than once or not at…
Answer this question and get it marked →This question is about ionic and covalent compounds. Sodium reacts with oxygen to form the ionic compound sodium oxide. Fig. 3.1 shows the electronic configurations of an atom of…
Answer this question and get it marked →Oxygen is produced by the decomposition of aqueous hydrogen peroxide. Manganese(IV) oxide, MnO2, is a catalyst for this reaction. State the meaning of the term catalyst.
Answer this question and get it marked →This question is about electricity and chemical reactions. The electrolysis of concentrated aqueous potassium bromide using graphite electrodes forms hydrogen at the cathode and…
Answer this question and get it marked →This question is about sulfur and compounds of sulfur. Sulfur is converted into sulfuric acid, H2SO4, by the Contact process (stage 1: molten sulfur - sulfur dioxide; stage 2: SO2…
Answer this question and get it marked →This question is about organic compounds. Butane reacts with chlorine in a photochemical reaction: C4H10 + Cl2 - C4H9Cl + HCl. State the meaning of the term photochemical.
Answer this question and get it marked →