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

A metal alloy contains 88.2% copper and 11.8% tin by mass. What is the percent by mass of tin in 250 g of this alloy?

Brass is often used for door handles because it does not rust and looks attractive. Which property of copper-zinc alloys explains why they do not form the red-brown rust seen on iron?

Why is a steel tool that is heat-treated (quenched and tempered) often stronger than the original steel?

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?

Which of these statements about bronze and brass is correct?

Brass is an alloy of copper and zinc. Which property of brass makes it suitable for decorative fittings and musical instruments?

Which of the following explains why many electrical wires are NOT made from steel alloys even though steel is strong?

Why is recycling aluminium from used alloy products much more energy-efficient than producing aluminium from its ore (bauxite)?

Why are alloys generally used in place of pure metals for tools such as hammers and chisels?

Which alloy would you choose if you need a lightweight, strong material for bicycle frames and aircraft structures?

Which statement explains why intermetallic compounds formed in some alloys can make them brittle?