Offshore wind turbines have steel (iron-containing) support platforms submerged in seawater. To prevent the structural steel from corroding, blocks of zinc are bolted directly to the submerged support columns.
Explain how the zinc blocks protect the steel support columns from corrosion.
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.