Marine vessels often have blocks of magnesium attached to their steel hulls. Explain how these magnesium blocks protect the steel hull from corroding, even when the steel is in direct contact with seawater.
97 exam-style questions on Edexcel GCSE Chemistry 6.1 Transition metals, alloys and corrosion, covering 6.1.1 Properties of transition metals, 6.1.2 Corrosion and its prevention, and 6.1.3 Alloys and the uses of metals. Each one has a worked solution and a mark scheme showing where the marks go.