Displacement reactions

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Thursday 8th Nov 2005
Displacement reactions
The reactions of metals in displacing others
How to write word equations for these reactions
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Remember the experiment you did last lesson.
Put the metals in order of how reactive they were
Copper, Magnesium, Zinc
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All metals can be put in order of how reactive
they are.
This is called the reactivity series
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What is a displacement reaction?
When one metal gets kicked out by another one.
e.g. Iron chloride Aluminium
The Aluminium kicks out the Iron and takes
chlorine so we end up with.
Aluminium Chloride Iron
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You will carry out a practical to observe
displacement of metals
You MUST wear goggles
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Write your results in the table
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What can you conclude about how metals are
displaced? (hint think about the reactivity
series)
Metals that are higher up in the reactivity
series can displace (kick out) metals below them
because they are stronger
If you didnt see a reaction what does this mean?
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Use this information to write word equations for
all the displacement reactions you have seen today
e.g. Copper sulphate Magnesium ?
Magnesium sulphate copper
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Summary
More reactive metals displace less reactive metals
We can use the reactivity series to predict if a
displacement will take place
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Have a go at this example (use reactivity series)
Magnesium Chloride Sodium ?