Metals And Their Uses Flashcards
Name two metals that have oxides that can be reduced by carbon.
Zinc, iron, tin, lead, copper.
What die we call the removal of oxygen from a metal oxide?
Reduction reaction.
Why’s does iron from the blast furnace have only a few uses?
It is brittle.
Why are steels more useful that pure iron?
They resist corrosion.
Why is it expensive to extract aluminium from its ore?
It requires high temperatures and a lot of electricity.
What is titanium a very useful metal for making aircraft engines?
It’s resistant to corrosion and is very strong.
Why are new ways of extracting copper being researched.
To reduce environmental impacts.
What tree ways can be used to produce copper metal from its compound?
Smelting, electrolysis,
Displacement.
What properties make transition metals useful materials for making things?
Strong, good conductors of heat and electricity.
What properties are needed for electrical wiring?
Good conductor of electricity, can be made into wires, can be bent into shape.
Why is the gold used for wedding rings mixed with other metals?
To make them harder so they keep their shape.
Why should be recycle aluminium cans?
To save the energy needed to extract it from its ore.
What is an ore?
Rock that contains metal or metal compounds.
