IGCSE Chemistry (0620) — October–November 2023, Paper 53
3 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 17 marks · Practical: titration
You are going to investigate the reaction between dilute hydrochloric acid and aqueous sodium hydroxide. In Experiment 1, 25 cm³ of dilute hydrochloric acid with methyl orange…
Answer this question and get it marked →Question 2 · 17 marks · Practical: qualitative analysis, flame tests
You are provided with two substances: solid I and solution J. Conduct a flame test on solid I. Record your observations.
Answer this question and get it marked →Question 3 · 6 marks · Practical: planning, rate of reaction and temperature
You are asked to investigate the effect of temperature on the rate of decomposition of aqueous hydrogen peroxide. Aqueous hydrogen peroxide decomposes to make oxygen gas (hydrogen…
Answer this question and get it marked →← October–November 2023 Paper 61 · October–November 2023 Paper 52 →