IGCSE Chemistry (0620) — October–November 2023, 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 gives the electronic configurations of some atoms and ions, A to G (A = 2,5; B = 2,8; C = 2,8,2; D = 2,8,4; E = 2,8,5; F = 2,8,6; G = 2,8,18,7). Answer the following…
Answer this question and get it marked →Cobalt and copper are transition elements. Copper has two naturally occurring isotopes, ⁶³Cu and ⁶⁵Cu. Cobalt has only one naturally occurring isotope, ⁵⁹Co. Complete Table 2.1 to…
Answer this question and get it marked →Iron is manufactured in a blast furnace. Three of the starting materials added to the blast furnace are coke, iron ore and limestone. Name the other starting material added to the…
Answer this question and get it marked →This question is about lead(II) chloride, PbCl2. A student prepares a sample of insoluble lead(II) chloride, PbCl2, by mixing aqueous solutions of two salts in a beaker. Identify…
Answer this question and get it marked →Chemical reactions can involve transfer of thermal energy. State the term used for the transfer of thermal energy during a reaction.
Answer this question and get it marked →A homologous series is a family of organic compounds whose members have similar chemical properties. Give two characteristics that are the same for all members of a homologous…
Answer this question and get it marked →← October–November 2023 Paper 43 · October–November 2023 Paper 41 →