A student wants to produce hydrogen safely in the school laboratory by adding a metal to dilute hydrochloric acid. Which metal should the student choose, and why?
Copper, because it reacts steadily with the acid
Sodium, because it reacts quickly with the acid
Zinc, because it reacts steadily with the acid
Gold, because it reacts slowly with the acid
39 exam-style questions on AQA GCSE Chemistry 4.1 Reactivity of metals, covering 4.1.1 Metal oxides, 4.1.2 The reactivity series, 4.1.3 Extraction of metals and reduction, and 4.1.4 Oxidation and reduction in terms of electrons. Each one has a worked solution and a mark scheme showing where the marks go.