State two additional physical properties that are typical of metals.
Arrange these metals in order of reactivity with water, from least reactive to most reactive: cerium, iron, magnesium, sodium.
For the reaction of iron with steam, the equation is $3\text{Fe} + 4\text{H}_2\text{O} \rightarrow \text{Fe}_3\text{O}_4 + 4\text{H}_2$. Calculate the greatest mass of $\text{Fe}_3\text{O}_4$ that may be produced when 39.2 g of iron is reacted with excess steam. Give your answer to three significant figures.
Calculate the maximum volume of hydrogen, in dm$^3$, formed by this reaction at room temperature and pressure.
Pure iron can be produced by this reaction: $\text{Fe(CO)}_5 \rightarrow \text{Fe} + 5\text{CO}$. State one hazard linked to this reaction.