Iron plus oxygen reacts to form iron oxide. And that’s your word equation! What word is used to describe the chemicals that are made during a chemical reaction? These chemicals appear on the ...

Symbol equations are a quick way of representing chemical reactions ... so it’s represented by O2. So iron, Fe, reacts with oxygen in the air, O2, to make iron oxide: Fe2O3.

This goes against everything we know about the metal, which is notoriously susceptible to the elements – developing a coat of ...