Spec. 5.4.1.2, 5.4.1.4
DISPLACEMENT REACTIONS
DO NOW – Using last lessons knowledge fill in the blanks
1.
Potassium + Hydrochloric acid  Potassium? Chloride + Hydrogen
2. Lithium + Water  Lithium Hydroxide
+ Hydrogen
?
3. Copper + Oxygen  Copper? Oxide
CHALLENGE – Write the balanced equation for the
above equations
PROGRESS INDICATORS
Good progress
Outstanding progress
Grade 1-3
Use the reactivity series to
determine whether a
reaction between a metal
and a different metal salt
would happen or not.
Recall a definition of a
displacement reaction.
Grade 4-6
Construct word equations
for displacement reactions.
Construct balanced symbol
equations for displacement
reactions.
Grade 7-9
Construct word equations
for displacement reactions.
Determine which species is
oxidised and which species
(metal atom or ion) is
reduced in a displacement
reaction in terms of electron
transfer, supported using
ionic equations.
Construct balanced symbol
equations for displacement
reactions.
WORD CONSCIOUSNESS
Displacement Reaction- Where a more reactive element
replaces a less reactive element in a compound
Compound - Where two or more different elements are
chemically bonded together
ACTIVITY 1- WATCH VIDEO
DEMONSTRATION
If a more reactive metal is placed into a different metal solution it
will react and displace the other metal.
Magnesium is more reactive than copper and displaces it.
https://www.youtube.com/watch?v=XGA2gyGqGMc
ACTIVITY 2
Use the reactivity series to determine if a reaction
would happen or not.
Reaction
Zinc + copper sulfate
Iron + copper sulfate
Copper + magnesium sulfate
Zinc + iron sulfate
Magnesium + zinc sulfate
No
reaction
ACTIVITY 2 - ANSWERS
Use the reactivity series to determine if a reaction
would happen or not.
Reaction
Zinc + copper sulfate
Iron + copper sulfate


Copper + magnesium sulfate
Zinc + iron sulfate

Magnesium + zinc sulfate

SA
No
reaction

Self assess in red pens please
ACTIVITY 3 - DISPLACEMENT
Fill in the gaps using the terms MORE or LESS.
MORE reactive metal will push out
In displacement reactions, a ________
a _______
LESS reactive metal from its compound
ACTIVITY 4
1. Use your reactivity series to fill in the results table below. Tick if there is a reaction.
2. Use your completed results table to write 12 word equations for the reactions.
1
4
7
10
2
3
5
6
8
11
9
12
CHALLENGE –
Construct balanced symbol equations for each question.
WORD EQUATIONS – ANSWERS
ACTIVITY
4 -+ ANSWERS
1. Magnesium + zinc
sulfate  Zinc
magnesium sulfate
2. Magnesium + iron sulfate  Iron + magnesium sulfate
3.1.Magnesium
+ copper
sulfate
results
Copper
+ magnesium
Use your reactivity
series to
fill in the
table below.
Tick if theresulfate
is a reaction.
4.2.Zinc
magnesium
sulfate
+ word
magnesium
Use +
your
completed results
table
to Zinc
write 12
equations sulfate
for the reactions.
5. Zinc + Iron sulfate  Iron + zinc sulfate
6. Zinc + copper sulfate  Copper + Zinc sulfate
7. Iron + magnesium sulfate  Iron + magnesium sulfate
8. Iron + zinc sulfate  Iron + zinc sulfate


9. Iron + copper sulfate  Copper+ Iron sulfate
10. Copper + magnesium
sulfate  Copper + 
magnesium sulfate


11. Copper + zinc sulfate  Copper + zinc sulfate
 + iron sulfate


12. Copper + iron sulfate
 Copper



CHALLENGE –
Construct balanced symbol equations for each question.
ACTIVITY 5
Construct 12 balanced symbol equations for each word equation. Hint cards available.
You need to wait three minutes before going up for a hint card.
1. Mg + ZnSO4  Zn + MgSO4
2. Mg + FeSO4  Fe + MgSO4
3. Mg + CuSO4  Cu + MgSO4
4. Zn + MgSO4  Zn + MgSO4
5. Zn + FeSO4  Fe + ZnSO4
6. Zn + CuSO4  Cu + ZnSO4
7. Fe + MgSO4  Fe + MgSO4
8. Fe + ZnSO4  Fe + ZnSO4
9. Fe + CuSO4  Cu + FeSO4
10. Cu + MgSO4  Cu + MgSO4
11. Cu + ZnSO4  Cu + ZnSO4
12. Cu + FeSO4  Cu + FeSO4
IONIC EQUATIONS- HT ONLY
Worked example
1. Mg + ZnSO4  Zn + MgSO4
Magnesium is oxidised
Mg  Mg2+ + 2e-
Zinc is reduced
Zn2+ + 2e-  Zn
In terms of electrons….
Oxidation is Loss of electrons
Reduction is Gain of electrons
WORD CONSCIOUSNESS – HT ONLY
Displacement Reaction- Where a more reactive element
replaces a less reactive element in a compound
Compound - Where two or more different elements are
chemically bonded together
Oxidation – Loss of electrons (gain of oxygen)
Reduction – Gain of electrons (loss of oxygen)
ACTIVITY 7 – HT ONLY
Complete the triangle!
1 question you still have
2 facts you’ve learnt
3 key words