(a)[2]
Give two reasons for blowing air into the blast furnace.
(b(i))[1]
Give the name of another iron ore.
(b(ii))[2]
Complete the chemical equation for the reduction of Fe3O4. Fe3O4 + 4CO → ....Fe + ....CO2
(b(iii))[1]
Explain how this equation shows that Fe3O4 is reduced.
(c)[2]
Give the meaning of the term thermal decomposition.
(d(i))[1]
State the meaning of the term alloy.
(d(ii))[1]
Choose from diagrams B, C, D or E the structure that best represents an alloy.
(d(iii))[3]
Deduce the number of electrons, neutrons and protons in one atom of this isotope of vanadium.
(d(iv))[2]
Give two other physical properties of vanadium that are characteristic of all metals.