Topic 4 - Extracting metals and Equilibria

Question 1

What is really mesured in the reactivity series?

Answer 1

How easily the metals form positive ions -> how easily they react

Question 2

Displacement reactions

Answer 2

When more reactive metals replace less reactive metals.

Question 3

How do you extract metal ores that are less reactive than carbon?

Answer 3

Reduction with carbon

Question 4

1.

How do you extract metal ores that are more reactive than carbon?

Answer 4

electrolysis

Question 5

What happens in reduction with carbon?

Answer 5

It switches with the metal oxide to form carbon dioxide, leaving the metal by itself, rreduced.

Question 6

Bio-leaching

Answer 6

The extraction of metals in their ores through the use of living organisms.
Bacteria feeds on copper ore and then produces pure copper in its leachate.

Question 7

Phyto-mining

Answer 7

The extraction of metals in their ores through
the use of plants.
Plants that absorb copper ions are harvested and burned for pure copper.