IGCSE Chemistry (0620) — May–June 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 elements in Fig. 1.1. Each symbol of the element may be used once, more than once or not at all. Give the symbol of the element that…
Answer this question and get it marked →Table 2.1 shows some properties of the halogens. halogen melting point in °C boiling point in °C density at r.t.p. in g/cm³ --- --- --- --- fluorine -220 -188 0.0016 chlorine -101…
Answer this question and get it marked →Water from natural sources contains dissolved gases. Choose from the list, the gas that is essential for aquatic life. Draw a circle around your chosen answer. argon hydrogen…
Answer this question and get it marked →This question is about sulfur and compounds of sulfur. Sulfur has several isotopes. Define the term isotopes.
Answer this question and get it marked →This question is about metals. Iron is a transition element. Potassium is an element in Group I of the Periodic Table. State two differences in the physical properties of iron…
Answer this question and get it marked →A student investigates the reaction of small pieces of zinc of the same mass and size with three different concentrations of dilute hydrochloric acid in the presence of a…
Answer this question and get it marked →Fig. 7.1 shows the displayed formula of mesaconic acid (a molecule containing two carboxylic acid –COOH groups, a C=C double bond and a –CH₃ branch). On Fig. 7.1 draw a circle…
Answer this question and get it marked →This question is about nitrogen and compounds of nitrogen. Nitrogen is a non-metal. Nitrogen is a poor electrical conductor. Describe two other physical properties which are…
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