IGCSE Chemistry (0620) — October–November 2024, Paper 43
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →A list of substances is shown: bauxite; carbon dioxide; cryolite; ethane; ethanol; ethene; graphite; helium; hematite; hydrogen; silicon(IV) oxide; sodium chloride. Answer the…
Answer this question and get it marked →This question is about electrolysis. State the meaning of the term electrolysis.
Answer this question and get it marked →This question is about compounds of tin. Tin(IV) oxide has the formula SnO2. The relative formula mass, Mr, of SnO2 is 151. Calculate the percentage by mass of tin in SnO2.
Answer this question and get it marked →This question is about sulfuric acid, H2SO4. Dilute sulfuric acid and aqueous sodium hydroxide can be used to prepare sodium sulfate crystals using a method that involves…
Answer this question and get it marked →This question is about rate of reaction and equilibrium. A student investigates the rate of decomposition of aqueous hydrogen peroxide, H2O2, using manganese(IV) oxide as a…
Answer this question and get it marked →This question is about hydrocarbons. State the meaning of the term hydrocarbon.
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