In a laboratory, small iron objects can be protected from corrosion (rusting) by coating them with a thin layer of grease or oil.
Give two reasons why applying a simple grease or oil coating is not a suitable method for protecting large-scale steel structures, such as offshore wind turbine towers, from corrosion over their service life.
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.
