An emergency team needs a frame for a folding stretcher that must be easy to carry over long distances. Frame P is made from an aluminium alloy and frame Q is made from stainless steel. The two frames have the same dimensions, and both are strong enough to support a patient.
Which statement gives the best recommendation for the team?
Frame P, because the aluminium alloy has a lower density, so the frame has a lower mass.
Frame Q, because stainless steel has a higher density, so the frame is stronger.
Frame P, because the aluminium alloy has a higher density, so the frame is stronger.
Frame Q, because stainless steel has a lower density, so the frame has a lower mass.
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.