Extractions Of Metals Flashcards
What is the name of iron ore
Haematite
What is an ore
An ore is a rock that contains enough of a metal,either in its elemental form or as a compound,that can be extracted from the rocks profitably
What does the phrase concentrating mean
Removing as much waste rock as possible
What are native metals
It is a metal that is so unreactive in there elemental form in rock
What is a redox reaction
It is when a metal oxide loses it oxygen and it is being reduced
What three things go into the blast furnace
Iron
Limestone
Coke
How many reactions occur in the blast furnace
5
The first reaction is
Carbon + oxygen goes to
Carbon dioxide
In reaction two
Carbon + carbon dioxide goes to carbon monoxide
What form of carbon is in this reaction and what type of reaction is this
Coke and reducing reaction
In reaction 3
Complete this
Iron 3 oxide + carbon monoxide goes to
Iron + carbon dioxide
In reaction 4
Calcium carbonate goes to calcium oxide + carbon dioxide
What is this reaction called
It is called thermal decomposition
What is pig iron
It is an iron that is made with 4% carbon
What is needed to make stainless steel
Iron chromium and carbon
What is the method called for extracting aluminium
Electrolysis
How in electrolysis is the aluminium’s melting point brought down
Because it is dissolved in molten cryolite
