Metallic bonding

Question 1

What is metallic bonding?

Answer 1

The attraction between positive metal ions and delocalised electrons.

Question 2

What do metals form?

Answer 2

Giant metallic structures, made of ions in regular layers.

Question 3

Properties of metals?

Answer 3

• Can conduct heat and electricity.
• Due to the delocalised electrons which move through the structure and carry charge.

Question 4

Melting and boiling points?

Answer 4

The strong attraction between the positive metal ions and delocalised electrons in the giant lattice need a lot of energy to be overcome.
- Therefore, metals are solids at room temperature.

Question 5

Malleability/ductility?

Answer 5

• The layers can slide over eachother when a metal is bent, hammered etc.
• Makes metals malleable and ductile.

Question 6

How can alloys fix the ions sliding over eachother in a metal?

Answer 6

• An alloy is a mixture of two or more metals.
• They are harder than pure soft metals.
• Adding different sized atoms to the metal distorts the lattice structure, making it harder for the ions to slide over eachother.