Sacrificial protection is a method used to prevent the rusting of underground structures.
An example of this is when blocks of magnesium are connected to underground steel (iron-containing) pipes.
Explain how the magnesium protects the steel pipes from rusting.
Practise Edexcel GCSE Chemistry Transition metals, alloys and corrosion with exam-style questions for Foundation and Higher tier. 97 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
