(a(i))[1]
How does the percentage of carbon in the steel affect its strength?
(a(ii))[1]
State whether a relationship exists between the percentage of carbon in the steel and its melting point range. Explain your answer.
(a(iii))[1]
Which steel is the most suitable for making a bicycle chain? Explain your answer.
(b)[1]
Which diagram best shows an alloy? Circle the correct answer.
(c(i))[1]
Apart from conducting electricity, what purpose does the steel core serve?
(c(ii))[2]
Give one further use of aluminium and state a property of aluminium that makes it suitable for this use.
(d(i))[2]
Which substance is oxidised in this reaction? Explain your answer.
(d(ii))[1]
Is this reaction exothermic or endothermic? Explain your answer.