Chemistry 0620 · IGCSE · Corrosion of metals

Corrosion of metals — practice question

Group I metals are highly reactive. Transition elements are metals as well, but they are less reactive than Group I metals.
(a)[2]

State two physical properties of Group I metals that are similar to those of transition metals.

(b)[2]

Describe two ways in which the physical properties of Group I metals differ from those of transition metals.

(c(i))[1]

Name the gas released.

(c(ii))[1]

Identify the ion present in the solution that makes it alkaline.

(c(iii))[2]

Write the chemical equation for the reaction between sodium and water.

(d(i))[1]

Name this process of coating iron objects with a layer of zinc.

(d(ii))[1]

Explain how completely coating an iron object with a layer of zinc stops rusting.

(d(iii))[2]

Rusting of iron ships can be prevented by fixing zinc blocks to the hull of the ship. Explain how this prevents rusting.

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