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Chemistry Unit 2- WJEC
Metals and their extraction
Reactivity series
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Cards (21)
Where is metal extracted?
From
ores
What are some examples of ores?
Haematite
and
bauxite
What can be extracted from
Haematite?
Iron
What can be extracted from
bauxite?
Aluminium
What does the method used for extraction depend on?
Reactivity
What extraction is used for very reactive metals?
Electrolysis
What extraction method is used for less reactive metals?
Reduction with carbon
When is electrolysis used for extraction?
When a
metal
is
more reactive
than
carbon
When are other methods used to extract metals?
When a
metal
is
less reactive
than
carbon
What will a more reactive metal do in displacement reactions?
It will
displace
a
less reactive metal
from a
compound
What is an example of a displacement reaction?
Aluminium
+
iron oxide
>
iron
+
aluminium oxide
In a displacement reaction, what happens to iron oxide and aluminium?
Iron
oxide is
reduced
and
aluminium
is
oxidised
What does a bigger difference in reactivity cause?
More energy
to be
released
What will a more reactive metal do in solution?
Displace
a
less
reactive
metal
from a
solution
What is an example of a displacement reaction in solution?
Magnesium
+
copper
sulfate
>
copper
+
magnesium
sulfate
What type of reaction is this?
Displacement
reaction
What does the speed of which hydrogen bubbles are produced show us?
How
reactive
a
metal
is
The
quicker
the
fizzing
the more
reactive
the
metal
is
Why are carbon and hydrogen included in the reactivity series?
As they’re
used
to
extract metals
What is the order of the reactivity series, top to bottom?
Potassium,
Sodium,
Lithium,
Calcium,
Magnesium,
Aluminium,
Carbon,
Zinc,
Iron,
Hydrogen,
Copper,
Silver
and
Gold
Does reactivity increases as you go up the reactivity series?
Yes.