Metallic crystals

Question 1

Metals exist as a

Answer 1

lattice of positive ions in a delocalised sea of electrons

high melting point

Question 2

when do metallic crystals conduct

Answer 2

In SOLIDS AND LIQUIDS

HOWEVER IN AQUEOUS WILL NOT DISSOLVE BUT MAY REACT

Question 3

Metallic structures are malleable why

Answer 3

When a force is applied, the metal layers can slide due to layers being so similar

The attractive forces between the metal ions and electrons act in all directions

So when the layers slide, the metallic bonds are re-formed

The lattice is not broken and has changed shape

Question 4

Metallic lattices are strong and hard due to

Answer 4

Due to the strong attractive forces between the metal ions and delocalised electrons

Question 5

Pure metals are…….. in water

Answer 5

insoluble

Question 6

Metals can conduct electricity when in the

Answer 6

solid or liquid state
As both in the solid and liquid state there are mobile electrons which can freely move around and conduct electricity

Question 7

metals may react but wont dissolve