Question

Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.

Answer 1

\[\ce{\underset{oxide}{\underset{Iron (III)}{Fe2O3_{(s)}}} + \underset{Aluminium}{2Al_{(s)}} -> \underset{Iron}{2Fe_{(l)}} + \underset{oxide}{\underset{Aluminium}{Al2O3_{(s)}}} + Heat}\]