Please enable JavaScript.
Coggle requires JavaScript to display documents.
2f) REACTIVITY SERIES OF METALS (A more reactive metal displaces a less…
2f) REACTIVITY SERIES OF METALS
Very reactive
Potassium - K
Sodium - Na
Lithium - Li
Calcium - Cu
Magnesium - Mg
not very reactive
Silver - Ag
Gold - Au
Copper - Cu
fairly reactive
Aluminium - Al
(Carbon - C)
Zinc - Zn
Iron - Fe
(Hydrogen - H)
P
lease
S
end
L
ovely
C
harlie's
M
onkeys
A
nd
C
ool
Z
ebras
I
n
L
ead
H
elpful
C
ages
S
ecurely
G
uarded
P
otassium
S
odium
L
ithium
C
alcium
M
agnesium
A
luminium
C
arbon
Z
inc
I
iron
L
ead
H
ydrogen
C
opper
S
ilver
G
old
The reactivity series lists metals in order of their reactivity towards other substances
A more reactive metal displaces a less reactive metal
More reactive metals react more strongly than less reactive metals
This means that more reactive metals will displace a less reactive metal from its oxide because it will bond more strongly to oxygen
Metal compounds like copper sulphate, zinc chloride and sodium chloride are all metal salts
If you put a reactive metal into a solution of a less reactive metal salt the reactive metal will replace the less reactive metal in the salt
if a less reactive is put into a solution with a more reactive metal salt then nothing will happen
you can use a displacement reaction to work out where in the reactivity series it is
Key terms
OILRIG
Oxidation
= is the Loss of Electrons
Reduction
= is the gain of Electrons
Redox Reaction
- both oxidation and reduction taking place in the same reaction
Oxidising agent
- provides the oxygen for oxidation to take place
Oxidation
- the gain of Oxygen
Reducing agent
- removes the oxygen from a compound so reducing it.
Reduction
- the removal of oxygen
sacrificial protection of Iron
Galvanising - coating iron with a layer of Zinc
the iron is coated with a more reactive metal
Any water or oxygen present will react with the more reactive metal rather than iron
the iron doesn't rust
barrier method
puts a physical barrier that keeps the iron away from air and water
Alloying the iron with chromium and nickel to create stainless steal
an alloy is a mixture of 2 or more metals. it creates strong oxide layers
this protects the iron as stainless steal, which is very resistive to corrosion
sacrificial anodes - e.g. attaching blocks of Zinc to the hulls of ships - works the same as galvanising
