3 - Metallic bonding

Question 1

What is metallic bonding?

Answer 1

The electrostatic force of attraction between metal ions and delocalised electrons

Question 2

What is the structure of a metallically bonded substance?

Answer 2

A giant metallic lattice of positively charged metal ions surrounded by a sea of delocalised electrons

Question 3

What are the properties of metallically bonded substances?

Answer 3

• good conductors of electricity and heat
• very strong
• malleable and ductile
• have high melting points
• insoluble

Question 4

Why are metallic substances good conductors of heat and electricity?

Answer 4

Sea of delocalised electrons can carry a flow of charge and create an electrical current

Question 5

How are metallic substances malleable?

Answer 5

The layers of positive metal ions are able to slide over one another

Question 6

Why do metallic substances have high melting and boiling points?

Answer 6

Strong electrostatic forces between the positive ions and delocalised electrons require a lot of energy to overcome