The diagram shows a simple electrochemical cell. [Figure of a simple electrochemical cell showing a V voltmeter connected to a positive electrode and a negative electrode, both immersed in dilute sulfuric acid.] The voltages produced by different combinations of metal electrodes are shown in the table below. The more reactive metal is always the negative electrode. | positive electrode | negative electrode | voltage/V | |:-------------------|:-------------------|:----------| | copper | zinc | 1.10 | | copper | tin | 0.48 | | copper | magnesium | 2.70 | | copper | iron | 0.78 | | silver | copper | 0.46 |

1. (a)(i)Write an equation showing the conversion of zinc to zinc ions.[1]
2. (a)(ii)How does the table above show that copper is above silver in the reactivity series?[1]
3. (a)(iii)Which combination of metals in the table above will give the highest voltage?[1]
4. (a)(iv)Use the information in the table to deduce the order of reactivity of the metals copper, iron, magnesium, tin and zinc. Explain your answer. most reactive least reactive[2]
5. (b)Refer to the structure of metals to explain
6. (b)(i)why metals are malleable,[2]
7. (b)(ii)why metals conduct electricity.[1]
8. (c)Explain why plating iron with tin prevents the iron from rusting.[1]

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