IGCSE Chemistry (0620) — October–November 2023, Paper 31
8 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 (ammonium nitrate, carbon monoxide, copper(II) chloride, ethane, ethene, litmus, methane, methyl orange,…
Answer this question and get it marked →Fig. 2.1 shows the distillation apparatus that can be used to separate water from aqueous copper(II) sulfate. The apparatus consists of a distillation flask containing aqueous…
Answer this question and get it marked →Table 3.1 shows the average concentrations, in ng / 1000 cm³, of air pollutants in four different years. year ammonia hydrocarbons oxides of nitrogen particulates sulfur dioxide…
Answer this question and get it marked →Bromine is a liquid at room temperature. State two general properties of a liquid.
Answer this question and get it marked →This question is about metals and metal compounds. Table 5.1 shows some properties of some Group I metals. metal melting point in °C boiling point in °C observations on reaction…
Answer this question and get it marked →A student investigates the reaction of large pieces of magnesium carbonate with dilute hydrochloric acid at 20 °C. The magnesium carbonate is in excess. Fig. 6.1 shows the volume…
Answer this question and get it marked →Fig. 7.1 shows the displayed formula of compound S. The structure has a central carbon bonded to: H, an -O-H (hydroxyl) group, another carbon bearing two H atoms, and a carboxylic…
Answer this question and get it marked →Lithium bromide is a compound with ionic bonding. State the meaning of the term ionic bond.
Answer this question and get it marked →← October–November 2023 Paper 32 · October–November 2023 Paper 23 →