Question 7
FThe drawings are intended to compare a pure metal A with an alloy B. Different shading represents different elements. The circles in B have been drawn the same size and on a regular grid.
a.[2]
Explain what the drawings show correctly about composition and why B is not necessarily a compound with a fixed formula.
b.[3]
Redraw a small region of B to show how atoms of a different size can affect the arrangement. Use your improved model to explain why this alloy can be harder than A.
c.[3]
A designer needs a wire that bends repeatedly and a separate cutting edge that resists deformation. Suggest which structure is more suitable for each use and justify both choices. State one additional property that should be checked before selecting the cutting-edge material.
6.1 Transition metals, alloys and corrosion Questions
42 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.