IGCSE Chemistry (0620) — May–June 2025, Paper 52
3 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 19 marks · Experimental techniques and chemical analysis - measurement; Energetics
You are going to investigate the temperature change when anhydrous lithium chloride dissolves in water. Read all of the instructions carefully before starting the experiments.…
Answer this question and get it marked →Question 2 · 15 marks · Experimental techniques and chemical analysis - identification of ions (cation tests)
You are provided with two solids: solid J and solid K. Do the following tests on solid J and solid K. Record all of your observations at each stage. Tests on solid J Add about 5…
Answer this question and get it marked →Question 3 · 6 marks · Experimental techniques and chemical analysis - planning an investigation; solubility
Magnesium sulfate is a salt. Magnesium sulfate is soluble in water. The solubility of a salt is the mass of the salt, in g, that dissolves in 100 cm3 of water at a specified…
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