Topic 2 Meatllic Bonding

Question 1

What is metallic bonding between

Answer 1

Between metals

Question 2

What structure do metallic binds consist of

Answer 2

Giant structure

Question 3

What is the force that holds metal atoms together

Answer 3

Electrostatic forces of attraction

Question 4

How are electrostatic forces of attraction made

Answer 4

The electrons in the outer shell of a metal are delocalised and share string electrostatic forces of attraction with the positive metal ions
These forces of attraction hold atoms together in a regular structure and Is known asmetallic bonding

Question 5

Is metallic bonding strong

Answer 5

Yes

Question 6

Why are most metals solid at room temperature

Answer 6

Electric forces between the metal atoms and sea of delocalised electrons are very strong so need lots of energy to be broken
Most compounds with metallic bonding have a very high melting and boiling points so are generally solid at room temperature

Question 7

Why are metals good conductors of electricity and heat

Answer 7

The delocalised electrons carry electric charge and thermal energy through the metal so metals are good conductors of electricity and heat

Question 8

Why are most metals malleable

Answer 8

The layers of atoms in a metal can slide over each other making metals malleable
this means that they can be bent or hammered or rolled into flat sheets

Question 9

Why do we use alloys

Answer 9

Because they are harder than pure metals

Question 10

Why are alloys harder than pure metals

Answer 10

Different elements have different sized atoms
so when another element is mixed with a pure metal the new metal atoms will distort the layers of the metal atoms making it more difficult for them to slide over each other

Question 11

Definition of alloys

Answer 11

A mixture of two or more metals or a metal and another element