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Alloys As Useful Materials (chemistry Only) (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Alloys As Useful Materials (chemistry Only)' from the broader topic Using Resources. The test is geared towards the AQA exam board style syllabus.
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Which of the following is a key environmental benefit of recycling metal alloys rather than extracting new metal from ore?
Brass is an alloy of copper and zinc. Which property of brass makes it suitable for decorative fittings and musical instruments?
An alloy is described as “interstitial” when:
Why are alloys generally used in place of pure metals for tools such as hammers and chisels?
Solder is a low-melting alloy used to join electrical components. Which statement about solder is correct?
An alloy is a mixture of a metal with one or more other elements. Which statement best explains why alloys are often harder than the pure metal they include?
Which of these is a disadvantage of using an alloy instead of a pure metal for recycling?
Why might a manufacturer choose a copper-beryllium alloy (a costly engineered alloy) for precision springs rather than a cheaper steel?
Why is a steel tool that is heat-treated (quenched and tempered) often stronger than the original steel?
Why is recycling aluminium from used alloy products much more energy-efficient than producing aluminium from its ore (bauxite)?
A manufacturer wants to reduce cost while keeping electrical conductivity high for power transmission lines. Which material is commonly used as a compromise because it is lighter and cheaper than copper but still conducts well?