Uses of metals Flashcards
The properties and uses of metals
Are all metals magnetic?
No
What does it mean when we say that metals are attracted to each other?
It means that metal are pulled toward each other as they are magnetic.
What does it mean when we say that a metal is tarnished?
It means that the metal is changing and becoming dull.
When a metal is breaking down, it means that the metal is:
a) Brittal
b) Tarnished
c) Corroded
d) Magnetic
c) Corroded
Only four metals are magnetic. Two of these are steel and cobalt. Name the other two?
Iron and nickel.
Why is a R2 coin attracted to a magnet when it is made from a non-magnetic metal?
R2 coins are made from copper which is non-magnetic, but it is coated with nickel which is magnetic.
Which is the only metal that does not corrode?
Gold.
When Iron corrodes, we say it ________.
Rusts.
Name three ways that one can use to stop iron and steel corroding.
- Coat in plastic. Insulate.
- Paint the metal
- Coat the iron and steel with another metal that does not rust.
- Coat the iron and steel with oil or grease.
To stop iron from corroding it must be protected from _________ and ___________.
Air and water.
A framework for support is know as a ______________.
Structure.
What does ornamental mean? Which metals are used to make ornaments.
To make something look pretty.
Metals used are gold, silver and copper.
What do we call it when one reuses old material to make new material.
We recycle.
What forms of transport are made from metals like steel?
Train, motorbike, truck, car, ships.
What form of transport is made from a metal like aluminium?
Aeroplanes.
