IGCSE Chemistry (0620) — October–November 2023, Paper 43
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 substances from the list (barium nitrate, carbon monoxide, hydrated cobalt(II) chloride, copper(II) oxide, anhydrous copper(II)…
Answer this question and get it marked →Table 2.1 gives information about particles A, B, C, D, E and F (electrons, neutrons, protons): A (5,6,5), B (10,11,10), C (10,14,13), D (18,17,16), E (18,17,17), F (15,16,15).…
Answer this question and get it marked →This question is about nitrogen and some of its compounds. Nitrogen is converted into ammonia, NH3, in the Haber process. Nitrogen is obtained from air. State the percentage of…
Answer this question and get it marked →This question is about sulfuric acid and salts that are made from sulfuric acid. Zinc reacts with dilute sulfuric acid. Aqueous zinc sulfate is one of the products. Powdered zinc…
Answer this question and get it marked →This question is about iron. Describe the bonding in a metallic element such as iron. You may include a labelled diagram as part of your answer.
Answer this question and get it marked →Esters are members of a homologous series of organic compounds. Give two characteristics that are the same for all members of a homologous series.
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