Metal Properties Flashcards
1
Q
Name 6 properties of a metal.
A
- Lustrous (shiny)
- Hard
- High density (heavy for its size)
- High tensile strength (resist being stretched)
- High melting and boiling points
- Good conductors of heat and electricity
2
Q
What is iron used to make and why?
A
Cars and bridges because it is hard with high tensile strength
3
Q
What is copper used to make and why?
A
Electrical wiring because it is a good conductor of electricity
4
Q
Why do metals have high melting and boiling points?
A
Because they have strong metallic bonds that need a lot of energy to be broken.
5
Q
Why are metals good conductors of electricity?
A
They contain electrons that are free to move in the metal structure, allowing them to carry electricity from place to place.
6
Q
What is metallic bonding?
A
Metallic bonding is the strong attraction between closely packed positive metal ions and a ‘sea’ of delocalised electrons.