Metals Flashcards
Why can gold be found in the Earth’s crust in its native state?
Gold is very unreactive
Why is aluminium extracted from aluminium ore by electrolysis?
Aluminium is more reactive than carbon
Why is aluminium extracted from aluminium ore by electrolysis?
Why is aluminium extracted from aluminium ore by electrolysis?
What happens to iron oxide in a blast furnace?
It is reduced to form iron
In comparison with steel, what is pure iron like?
Softer
What is the percentage of iron in the iron from a blast furnace?
96%
Which type of steel is likely to be used for making cutlery?
Stainless steel
What process is used to purify copper?
Electrolysis
Why is titanium expensive to extract from its ore?
Several stages are involved
What does phytomining involve?
Using plants to absorb metal compounds
Copper can be obtained by reacting solutions of copper compounds with scrap iron. What is this sort of reaction is called?
Displacement
