Chemistry 0620 · IGCSE · Metallic bonding

Metallic bonding — practice question

Iron is a transition element, whereas potassium belongs to Group I.
(a)[4]

Iron and potassium have the same kind of bonding. Name and describe the bonding found in these two elements.

(b(i))[1]

What term is used for the ability of elements to be hammered into a shape?

(b(ii))[1]

Describe what happens to the particles in iron as it is hammered into a shape.

(b(iii))[1]

Suggest why copper, rather than other transition elements, is chosen for wires that conduct electricity.

(c)[2]

Describe two other physical properties in which transition elements are unlike Group I elements.

(d(ii))[1]

State the gas released when Group I elements react with water.

(d(iii))[1]

State the solution formed when potassium reacts with water.

(d(iv))[1]

Predict the pH of the colourless solution made when potassium reacts with water.

(d(v))[2]

Write the balanced chemical equation for the reaction of sodium with oxygen.

(e(i))[2]

Write the equation for the reaction taking place in the Haber process.

(e(ii))[2]

State the temperature and pressure used in the Haber process, including units.

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