Chemistry 0620 · IGCSE · Extraction of metals

Extraction of metals — practice question

Iron is obtained from iron ore in a blast furnace.
(a)[1]

Name one ore of iron.

(b(i))[2]

Complete the chemical equation for when iron(III) oxide is reduced in the blast furnace. Fe$_2$O$_3$ + ....CO $\rightarrow$ ....Fe + 3CO$_2$

(b(ii))[1]

State what the term reduction means.

(c)[2]

State what is meant by thermal decomposition.

(d(i))[1]

Give one application of stainless steel.

(d(ii))[1]

Describe one benefit of stainless steel when compared with pure iron.

(e)[3]

Deduce how many electrons, neutrons and protons are present in one atom of this isotope of iron.

(f)[2]

Give two other physical properties of iron that are typical of all metals.

(g)[2]

Name the two substances that iron needs in order to rust.

Worked solution & mark scheme

This 15-mark question has a full step-by-step worked solution and mark scheme. One marking point: hematite (an iron ore)

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