Extracting Metals Flashcards Preview

C6.1 > Extracting Metals > Flashcards

Flashcards in Extracting Metals Deck (11):
1

What is an Ore?

Rock or mineral that contains enough metal to make it economical to extract the metal

2

What does the method chosen to extract a metal depend on?

It's position in the reactivity series

3

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

4

What is stage 1 of Copper extraction?

Copper(II) Sulfide is 'roasted' in air

5

What is the word equation for stage 1 of Copper extraction?

Copper(II) sulfide + Oxygen -> Copper(II) Oxide + Sulfur Dioxide

6

What is stage 2 of copper extraction?

Copper(II) Oxide is heated with carbon

7

What is the word equation for stage 2 of copper extraction?

Copper(II) Oxide + Carbon -> Copper + Carbon Dioxide

8

What type of reaction is Stage 2 of Copper extraction an example of?

REDOX reaction

9

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

10

What is acting as a reducing agent in Stage 2 of Copper extraction?

Carbon

11

What is another way Copper (II) oxide can be reduced to copper?

Heating it with Methane or Hydrogen