IGCSE Chemistry (0620) — May–June 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 →A list of oxides, A to H, is shown. A calcium oxide B aluminium oxide C silicon(IV) oxide D sulfur dioxide E carbon dioxide F iron(III) oxide G silver oxide H carbon monoxide…
Answer this question and get it marked →Fluorine, chlorine and bromine are in Group VII of the Periodic Table. State the name given to Group VII elements.
Answer this question and get it marked →Over 200 million tonnes of sulfuric acid are manufactured every year. State the name of the process used to manufacture sulfuric acid.
Answer this question and get it marked →Solid sodium hydroxide is a base which dissolves to form an aqueous solution, NaOH(aq). State what is meant by the term base.
Answer this question and get it marked →Propane and propene both react with chlorine. When a molecule of propane, C₃H₈, reacts with chlorine in the presence of ultraviolet light, one atom of hydrogen is replaced by one…
Answer this question and get it marked →Carboxylic acids can be converted to esters. Name the ester formed when butanoic acid, CH₃CH₂CH₂COOH, reacts with ethanol, CH₃CH₂OH.
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