Metallic Bonding Flashcards Preview

A-level AQA Chemistry - Bonding > Metallic Bonding > Flashcards

Flashcards in Metallic Bonding Deck (8)
Loading flashcards...
1
Q

Metallic Bonding

A

A lattice of closely packed positive ions in a sea of delocalised electrons

2
Q

Metal elements structures

A

Giant Metallic Lattice Structure

3
Q

Describe structure of metallic bonding

A

The outermost shell of electrons of a metal atom is delocalised- the electrons are free to move about the metal leaving a positive metal ion.

The positive metal ions are attracted to the delocalised negative electrons

4
Q

Explain why metals have high melting points

A

Because of the strong electrostatic attractions between the positive metal ions and the delocalised sea of electrons

5
Q

Explain why the number of delocalised electrons per atom affects the melting point

A

The more delocalised electrons there are, the stronger the bonding will be and the higher the melting point

6
Q

Explain why metals are good thermal conductors

A

The delocalised electrons can pass kinetic energy to each other

7
Q

Explain why metals are good electrical conductors

A

The delocalised electrons can move and carry a current

8
Q

Explain why metals are insoluble

A

Because of the strength of the metallic bonds

except in liquid metals