Metallic bonding

Question 1

What is metallic bonding formed from

Answer 1

Positive metal ions

Question 2

How is a metallic bond formed

Answer 2

🏮Electrons in the outer shell are delocalised (free to move)
🏮There are strong forces between the positive ions and the negative electrons
🏮These forces will hold the atoms together in a regular pattern (this is a metallic bond)

Question 3

What do metallic substances include

Answer 3

Metallic elements and alloys

Question 4

What produce the properties of metals

Answer 4

The delocalised electrons

Question 5

What are the properties of metals

Answer 5

🏮High melting and boiling points, the forces between the positive ions and the sea of negative electrons are very strong.
🏮Metals are usually very dense as the ions are closely packed.
🏮They are conductors as the delocalised electrons can carry electric current.
🏮They are shiny solids at room temperature
🏮 lose electrons to form full outer shells

Question 6

What are the properties of pure metals

Answer 6

🏮They are malleable, because the layers can slide over each other as all the atoms are the same size

Question 7

What are the properties of alloys

Answer 7

🏮Aren’t malleable, because the latest can’t slide over each other as the atoms are different sizes

Question 8

What are the properties of non-metals

Answer 8

🏮Tend to be dull looking brittle 
🏮lower boiling points 
🏮don’t conduct electricity 
🏮low-density 
🏮gain electrons to form full outer shells