Name the remaining starting material added to the blast furnace.
Name the principal iron ore that contains $\text{Fe}_2\text{O}_3$.
Complete the equation.\n\n$\text{Fe}_2\text{O}_3 + \ldots \text{CO} \rightarrow \ldots \text{CO}_2 + \ldots \text{Fe}$
State how the oxidation number of iron changes in the reaction in (ii). from ............ to ............
Explain why the change in oxidation number shows that iron has been reduced.
Write two symbol equations that show how silicon(IV) oxide is removed. For each equation, name the type of chemical reaction involved.
State the name for a substance that is a mixture of a metal and other elements.
Name one element, other than carbon, that is mixed with iron when stainless steel is made.
State the chemical name used for rust.
State the term for coating steel with zinc.
Describe one other barrier method used to prevent rusting.
Explain how zinc offers sacrificial protection.