Metals have characteristic physical properties such as good electrical and thermal conductivity.

1. (a)Give two other physical properties which are characteristic of metals. 1. 2.[2]
2. (b)The table gives some observations about the reactions of four metals with water. metal observations cerium reacts slowly with cold water iron reacts with steam when red-hot magnesium reacts slowly with hot water sodium reacts rapidly with cold water Put these metals in order of their reactivity with water. least reactive most reactive[1]
3. (c)(i)The equation for the reaction of iron with steam is shown. 3Fe + 4H2O → Fe3O4 + 4H2 Calculate the maximum mass of Fe3O4 that can be formed when 39.2g of iron reacts with excess steam. Give your answer to three significant figures. mass of Fe3O4 = g[3]
4. (c)(ii)Calculate the maximum volume of hydrogen, in dm³, produced by this reaction, when measured at room temperature and pressure. volume of hydrogen = dm³[2]
5. (d)Pure iron can be obtained by the following reaction. Fe(CO)5 → Fe + 5CO Give one hazard associated with this reaction.[1]