2.1.5, 2.2.7 And 2.2.8 Metalic Bonding , Properties Of Metals And Alloys And Metals As Conductors Flashcards
1
Q
Properties of a metal (5p)
A
Shiny
Malleable
Tactile
High boiling point
Good conductor of heat and electricity
2
Q
Why are metals malleable and ductile
A
-the layers metal ions can slide over each other because the delocalised electrons hold the metal together
- The metal ions are held together by a strong attraction between positive ions and delocalised electrons
3
Q
Why are alloys harder than pure metals? (2p)
A
- In atoms the atoms are different sizes
- The smaller or bigger atoms distort the layers of the pure metal making it more difficult for the layers to slide over each other
4
Q
Why are metals good conductors of electricity ?
A
The delocakised electrons in the metals carry electrical charge
5
Q
Why are metals good conductors of thermal energy?
A
Energy is transferred by the delocalised electrons
6
Q
Why are metals good conductors of thermal energy?
A
Energy is transferred by the delocalised electrons
