A manufacturer tests two panels for a metal storage case. The panels have the same dimensions. One panel is pure aluminium and the other is an aluminium alloy. The same force leaves a deeper dent in the pure aluminium panel.
Why does the pure aluminium panel deform more easily?
In pure aluminium, same-sized atoms form regular layers that can slide over each other easily.
In pure aluminium, atoms are arranged randomly, so there are no layers to resist the force.
In pure aluminium, smaller atoms move into spaces between larger atoms when the force is applied.
In pure aluminium, layers are widely spaced and are pushed closer together by the force.
118 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.