Topic 2.1.1 - Metallic bonding

Question 1

Properties of metals

Answer 1

high melting points
good electrical conductivity
good thermal conductivity
Malleable
Ductile

Question 2

High melting temperature?

Answer 2

Large amounts of energy are required to overcome the forces of attraction between nuclei of cations and the delocalised electrons.

Question 3

Electrical conductivity?

Answer 3

When a potential difference is applied to an end of a metal, electrons will move towards the positive end of the cell. This creates an electrical current.

Question 4

Thermal conductivity?

Answer 4

Free electrons pass kinetic energy along the metal. Also cations pass the kinetic energy between each other.

Question 5

Malleability and ductility?

Answer 5

Layers of cations are able to slide over each other.

Question 6

How does the charge of a metal ion affect boiling point?

Answer 6

A greater charge increases the boiling point. This is because there is greater attraction between the nuclei of cations and the electrons.

Question 7

Are metals insoluble or soluble in water?

Answer 7

Insoluble