Metallic Structures Flashcards
What important quality to metallic bonds have?
Delocalised electrons , which provide all the properties of metals.
Where do the delocalised electrons come from in a metal atom?
The outer shell
What enables the whole metallic structure to conduct electricity and heat?
The ‘free’ electrons , which can move through the whole structure.
What holds the atoms together in a regular structure?
The electrons
What are the strong forces between the negative electrons and positive metal ions?
Electrostatic attraction
The electrons allow the layers of atoms to …
Slide over each other and metals to be bent and shaped
Why are alloys harder than pure metals?
When another metal is mixed with a pure metal, the new metal atoms distort the layers of metal atoms, making it more difficult for them to slide over each other. So alloys are harder.
Why do scientists mix two or more metals together?
To create an alloy, with the properties they want.
What kind of structure are metals?
Giant metallic
