Metallic Substances

Question 1

Explain the structure and bonding of Metallic Substances

Answer 1

Metallic substances are made up of positively charged cations in a 3D lattice with delocalised valance electrons. The strong electrostatic attraction between electrons and ions is non directional and called metallic bonds

Question 2

Explain the conductivity of metallic substances

Answer 2

Metallic substances have free to move valance electrons and therefore they can conduct electricity.

Question 3

Explain the solubility of metallic substances

Answer 3

Metallic substances are not soluble in any solvent as the attractive force within the substances are stranger than the attractive forces between the metallic substance and solvent.

Question 4

Explain the MP/ BP of metallic substances

Answer 4

Metallic substances have strong metallic bonds, therefore a large amount of heat energy is required to overcome the metallic bonds and melt it. Therefore the temperature of the melting point is high.

Question 5

Explain the malleability/hardness/brittleness of metallic substances (hardness)

Answer 5

Generally metallic substances are considered to be hard, as they are held together by strong metallic bonds

Question 6

Explain the malleability/hardness/brittleness of metallic substances (malleability)

Answer 6

When a force is applied to a metallic substance, the positive ions in the lattice are able to move past each other without breaking the strong non directional metallic bonds which allows metallic substances to be malleable.

Question 7

Explain the malleability/hardness/brittleness of metallic substances (ductility )

Answer 7

Metallic substances are able to be drawn out into wires , making them ductile