3.5 Useful Metals Flashcards
1
Q
Why is copper useful for making pipes?
A
It doesn’t react with water and is malleable but hard enough to keep its shape
2
Q
Why is copper useful for making wires?
A
It is ductile and is a very good conductor of electricity
3
Q
Why are pure iron, gold, copper and aluminium often mixed with other elements to make alloys?
A
They are naturally very soft and can bend easily, so they are mixed to make alloys so they are harder and can keep their shape
4
Q
Name a use of gold alloy
A
Jewellery
5
Q
Name 2 uses of aluminium alloys
A
- buildings
* aircrafts
6
Q
What are bronze and brass alloys of?
A
Copper
7
Q
Why is bronze a useful metal?
A
It doesn’t bend and is really strong
8
Q
Why is brass a useful metal?
A
It doesn’t tarnish
9
Q
Name 7 properties of transition metals
A
- dense
- strong
- ductile
- malleable
- high bp/mp’s
- good conductors of heat and electricity
- solid at room temp
