Showing posts with label Metallic crystals. Show all posts
Showing posts with label Metallic crystals. Show all posts

Sunday, 7 June 2015

1.47 explain the electrical conductivity and malleability of a metal in terms of its structure and bonding.

CONDUCTIVITY AND MALLEABILITY:


- Metals contain a sea of delocalised electrons (electrons and ions can be charge carriers). That is to say there can be a flow of electricity through the electrons and ions.
- Metals are in layers.  This means they can slide over each other and change their shape. This is called malleability.

1.46 understand that a metal can be described as a giant structure of positive ions surrounded by a sea of delocalised electrons

METALS:

- Metals are simply just 3D (three dimensional) structures which are positive ions, surrounded by a sea of delocalised electrons. A metallic bond then forms - +ive ion and -ive ions attracts.