Chemistry · Oct / Nov 2020 · Paper 41 · Question 1
0620
As printed in the paper
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1(a)(i)[1]
hydrogen / carbon
1(a)(ii)[1]
silicon
1(a)(iii)[1]
aluminium
1(a)(iv)[1]
iron
1(a)(v)[1]
aluminium
1(a)(vi)[1]
oxygen
1(b)(i)[2]
metal higher in reactivity series / metal more reactive (than iron) / allow named metal e.g. magnesium or zinc (1)
zinc corrodes/oxidises/reacts in preference to iron (1)
1(b)(ii)[1]
any barrier method e.g. painting
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