Flashcards in Extracting Metals Deck (11):
What is an Ore?
Rock or mineral that contains enough metal to make it economical to extract the metal
What does the method chosen to extract a metal depend on?
It's position in the reactivity series
What extraction methods are there?
All methods could be extracted using electrolysis but this is expensive
If the metal is less reactive than carbon, cheaper methods are used instead (eg. heating with carbon or carbon monoxide
What is stage 1 of Copper extraction?
Copper(II) Sulfide is 'roasted' in air
What is the word equation for stage 1 of Copper extraction?
Copper(II) sulfide + Oxygen -> Copper(II) Oxide + Sulfur Dioxide
What is stage 2 of copper extraction?
Copper(II) Oxide is heated with carbon
What is the word equation for stage 2 of copper extraction?
Copper(II) Oxide + Carbon -> Copper + Carbon Dioxide
What type of reaction is Stage 2 of Copper extraction an example of?
How is Stage 2 of copper extraction an example of a REDOX reaction?
Copper (II) oxide loses Oxygen and is reduced
Carbon gains oxygen and is oxidised
What is acting as a reducing agent in Stage 2 of Copper extraction?