A precision steel instrument was stored inside a sealed glass cabinet containing a open dish of anhydrous calcium chloride. After several months of storage in a humid warehouse, the steel instrument showed no signs of rust.
Explain why the steel instrument did not rust under these conditions.
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.