5/2/26, 7:00 IGCSE Chemistry Complete
AM
IGCSE Chemistry Complete Exam Revision Pack – 596 Questions with
Detailed Correct Answers Covering Separation Techniques, Chemical
Tests, Equilibrium, Haber & Contact Process, Periodic Table, Acids &
Bases, and Full Syllabus Practice for IGCSE Exams.
State the method used to obtain filtration
sand from a mixture of sand and
water
State the method used to obtain crystallisation
solid copper sulfate from aqueous
copper sulfate
State the method used to obtain red paper chromatography
food dye from a mixture of food
dyes
State the method used to obtain simple distillation
water from salt water
Draw a diagram to show equipment For what process is this equipment used?
used in simple distillation
State the method used to obtain fractional distillation
kerosene from a crude oil.
Draw the equipment used in fractional For what process is this equipment used?
distillation in the lab
Explain how fractional distillation is The different liquids have different boiling points
used to separate a mixture of
different liquids
State the method used to extract Dissolving
the red dye from a sample of rose
petals
Describe how pure salt can be obtained from rock salt 1) Grind rock salt into a fine powder.
2) Add powder to hot water and stir to dissolve
salt. 3) Filter mixture. Salt solution passes through
the filter paper leaving behind the sand. 4) Boil
filtrate to evaporate some of the water. 5) Leave
saturated solution to cool so that crystals of salt
form. 6) Filter cold mixture to separate the crystals
from the remaining solution.
Ethanol is a flammable liquid. Use a water bath
Suggest how it could be heated
safely
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,5/2/26, 7:00 IGCSE Chemistry Complete
AM
Explain how a chromatogram shows Each dyes has a different mixture
that different dyes are different from
each other
State the expression for calculating Molar concentration = Amount (in moles)/volume (in
molar concentration dm^³)
Which cation gives a crimson red Li⁺
flame colour?
Which cation gives a orange flame Na⁺
colour?
Which cation gives a lilac flame K⁺
colour?
Which cation gives a brick red flame Ca²⁺
colour?
Describe how you would carry out a Put solid onto a wire. Put into a blue flame
flame test
How would you test for the Add sodium hydroxide. If ammonium ions were
ammonium ion? present, ammonia gas will form which will turn
damp red litmus paper blue
Describe how you would test for Cu²⁺ Add sodium hydroxide and a blue precipitate will
ions form
Give the formula of the blue Cu(OH)₂
precipitate formed when sodium
hydroxide is added to a solution
containing Cu²⁺
Describe how you would test for Fe²⁺ Add sodium hydroxide and a green precipitate will
ions form
Write a word equation for the sodium hydroxide + iron(II) sulfate -> iron (II)
reaction between sodium hydroxide hydroxide + sodium sulfate
and iron(II) sulfate
Describe how you would test for Fe³⁺ Add sodium hydroxide and a brown precipitate will
ions form
What 2 things are added to a solution Add dilute nitric acid and silver nitrate. A white
to test for chloride ions? What is precipitate of silver chloride is formed.
observed if they are present?
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,5/2/26, 7:00 IGCSE Chemistry Complete
AM
Describe the test for bromide ions. Add dilute nitric acid and silver nitrate. A cream
precipitate of silver bromide is formed.
After adding nitric acid and silver A yellow precipitate (of silver iodide) is formed.
nitrate to a solution containing iodide
ions, what colour precipitate is
formed?
Why is hydrochloric acid added To remove carbonate ions
before barium chloride solution in
testing for sulfate ions?
Describe how you would test for Add dilute HCl, followed by BaCl₂. A white
sulfate ions precipitate will form
Write an chemical equation for the BaCl₂ (aq) + Li₂SO₄ (aq) -> BaSO₄ (s)+ 2LiCl (aq).
reaction between barium chloride Observe a white precipitate of barium sulfate.
and lithium sulfate (Li₂SO₄). Include
state symbols. Also, what would you
see?
Describe how you would test for Add nitric acid and see if carbon dioxide bubbles
carbonate ions, CO₃²⁻ form
Describe the test for ammonia gas Turns damp red litmus paper blue
State the expression for calculating % yield = (actual amount of products/theoretical
% yield. (Triple science only!) amount of products) x100
Describe the chemical test for water Add water to anhydrous copper(II) sulfate which will
change from white to blue if water is present
What is the symbol for a reversible reaction?
The addition of water to anhydrous anhydrous copper sulfate (white) + water <->
copper sulfate can be used to test for hydrated copper sulfate (blue)
the presence of water. The reaction
is reversible. What is the word
equation? Describe the colour
change.
Ammonia and hydrogen chloride ammonia + hydrogen chloride <-> ammonium
react together in a reversible chloride NH₃ + HCl <-> NH₄Cl
reaction to produce a white solid.
What are the word and symbol
equations?
State two features of a reaction that 1) The rate of the forward reaction is equal to the
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, 5/2/26, 7:00 IGCSE Chemistry Complete
AM
is in dynamic equilibrium rate of the backward reaction. 2) There is no overall
change in concentrations.
Predict what will happen to the equilibrium position in the Equilibrium will move to the left
because there are fewer molecules on the left hand following reaction when the pressure is
increased. Give a side
reason for your prediction: CH₄(g) +
H₂O(g) <-> CO(g) + 3H₂(g) ΔH =
+210 kJ mol⁻1
Predict what will happen to the Equilibrium will move to the right because the
equilibrium position in the following forward reaction is endothermic
reaction when the temperature is
increased. Give a reason for your
prediction: CH₄(g) + H₂O(g) <->
CO(g) + 3H₂(g) ΔH = +210 kJ mol⁻1
Predict what will happen to the rate The rate will increase
of reaction in the following reaction
when the temperature and pressure
is increased. Give a reason for your
prediction: CH₄(g) + H₂O(g) <->
CO(g) + 3H₂(g) ΔH = +210 kJ mol⁻1
Predict what will happen to the Equilibrium will move to left the because the
equilibrium position in the following reaction is exothermic
reaction when the temperature is
increased. Give a reason for your
prediction: CO(g) + H₂O(g) <->
CO₂(g) + H₂(g) ΔH = -42 kJ mol⁻1
Predict what will happen to the Equilibrium will move to right the because the
equilibrium position in the following reaction is exothermic
reaction when the temperature is
decreased.
Give a reason for your prediction:
CO(g) + 2H₂(g) <-> CH₃OH(g) ΔH = -
91 kJ mol⁻1
Predict what will happen to the equilibrium position in the Equilibrium will move to left the
because there are more molecules on the left hand following reaction when the pressure is
decreased. Give a side
reason for your prediction: CO(g) +
2H₂(g) <-> CH₃OH(g) ΔH = -91 kJ
mol⁻1
State the raw materials used in the nitrogen from air and hydrogen from natural gas
manufacture of ammonia
State a use for N₂ making ammonia
4/47
AM
IGCSE Chemistry Complete Exam Revision Pack – 596 Questions with
Detailed Correct Answers Covering Separation Techniques, Chemical
Tests, Equilibrium, Haber & Contact Process, Periodic Table, Acids &
Bases, and Full Syllabus Practice for IGCSE Exams.
State the method used to obtain filtration
sand from a mixture of sand and
water
State the method used to obtain crystallisation
solid copper sulfate from aqueous
copper sulfate
State the method used to obtain red paper chromatography
food dye from a mixture of food
dyes
State the method used to obtain simple distillation
water from salt water
Draw a diagram to show equipment For what process is this equipment used?
used in simple distillation
State the method used to obtain fractional distillation
kerosene from a crude oil.
Draw the equipment used in fractional For what process is this equipment used?
distillation in the lab
Explain how fractional distillation is The different liquids have different boiling points
used to separate a mixture of
different liquids
State the method used to extract Dissolving
the red dye from a sample of rose
petals
Describe how pure salt can be obtained from rock salt 1) Grind rock salt into a fine powder.
2) Add powder to hot water and stir to dissolve
salt. 3) Filter mixture. Salt solution passes through
the filter paper leaving behind the sand. 4) Boil
filtrate to evaporate some of the water. 5) Leave
saturated solution to cool so that crystals of salt
form. 6) Filter cold mixture to separate the crystals
from the remaining solution.
Ethanol is a flammable liquid. Use a water bath
Suggest how it could be heated
safely
1/47
,5/2/26, 7:00 IGCSE Chemistry Complete
AM
Explain how a chromatogram shows Each dyes has a different mixture
that different dyes are different from
each other
State the expression for calculating Molar concentration = Amount (in moles)/volume (in
molar concentration dm^³)
Which cation gives a crimson red Li⁺
flame colour?
Which cation gives a orange flame Na⁺
colour?
Which cation gives a lilac flame K⁺
colour?
Which cation gives a brick red flame Ca²⁺
colour?
Describe how you would carry out a Put solid onto a wire. Put into a blue flame
flame test
How would you test for the Add sodium hydroxide. If ammonium ions were
ammonium ion? present, ammonia gas will form which will turn
damp red litmus paper blue
Describe how you would test for Cu²⁺ Add sodium hydroxide and a blue precipitate will
ions form
Give the formula of the blue Cu(OH)₂
precipitate formed when sodium
hydroxide is added to a solution
containing Cu²⁺
Describe how you would test for Fe²⁺ Add sodium hydroxide and a green precipitate will
ions form
Write a word equation for the sodium hydroxide + iron(II) sulfate -> iron (II)
reaction between sodium hydroxide hydroxide + sodium sulfate
and iron(II) sulfate
Describe how you would test for Fe³⁺ Add sodium hydroxide and a brown precipitate will
ions form
What 2 things are added to a solution Add dilute nitric acid and silver nitrate. A white
to test for chloride ions? What is precipitate of silver chloride is formed.
observed if they are present?
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,5/2/26, 7:00 IGCSE Chemistry Complete
AM
Describe the test for bromide ions. Add dilute nitric acid and silver nitrate. A cream
precipitate of silver bromide is formed.
After adding nitric acid and silver A yellow precipitate (of silver iodide) is formed.
nitrate to a solution containing iodide
ions, what colour precipitate is
formed?
Why is hydrochloric acid added To remove carbonate ions
before barium chloride solution in
testing for sulfate ions?
Describe how you would test for Add dilute HCl, followed by BaCl₂. A white
sulfate ions precipitate will form
Write an chemical equation for the BaCl₂ (aq) + Li₂SO₄ (aq) -> BaSO₄ (s)+ 2LiCl (aq).
reaction between barium chloride Observe a white precipitate of barium sulfate.
and lithium sulfate (Li₂SO₄). Include
state symbols. Also, what would you
see?
Describe how you would test for Add nitric acid and see if carbon dioxide bubbles
carbonate ions, CO₃²⁻ form
Describe the test for ammonia gas Turns damp red litmus paper blue
State the expression for calculating % yield = (actual amount of products/theoretical
% yield. (Triple science only!) amount of products) x100
Describe the chemical test for water Add water to anhydrous copper(II) sulfate which will
change from white to blue if water is present
What is the symbol for a reversible reaction?
The addition of water to anhydrous anhydrous copper sulfate (white) + water <->
copper sulfate can be used to test for hydrated copper sulfate (blue)
the presence of water. The reaction
is reversible. What is the word
equation? Describe the colour
change.
Ammonia and hydrogen chloride ammonia + hydrogen chloride <-> ammonium
react together in a reversible chloride NH₃ + HCl <-> NH₄Cl
reaction to produce a white solid.
What are the word and symbol
equations?
State two features of a reaction that 1) The rate of the forward reaction is equal to the
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, 5/2/26, 7:00 IGCSE Chemistry Complete
AM
is in dynamic equilibrium rate of the backward reaction. 2) There is no overall
change in concentrations.
Predict what will happen to the equilibrium position in the Equilibrium will move to the left
because there are fewer molecules on the left hand following reaction when the pressure is
increased. Give a side
reason for your prediction: CH₄(g) +
H₂O(g) <-> CO(g) + 3H₂(g) ΔH =
+210 kJ mol⁻1
Predict what will happen to the Equilibrium will move to the right because the
equilibrium position in the following forward reaction is endothermic
reaction when the temperature is
increased. Give a reason for your
prediction: CH₄(g) + H₂O(g) <->
CO(g) + 3H₂(g) ΔH = +210 kJ mol⁻1
Predict what will happen to the rate The rate will increase
of reaction in the following reaction
when the temperature and pressure
is increased. Give a reason for your
prediction: CH₄(g) + H₂O(g) <->
CO(g) + 3H₂(g) ΔH = +210 kJ mol⁻1
Predict what will happen to the Equilibrium will move to left the because the
equilibrium position in the following reaction is exothermic
reaction when the temperature is
increased. Give a reason for your
prediction: CO(g) + H₂O(g) <->
CO₂(g) + H₂(g) ΔH = -42 kJ mol⁻1
Predict what will happen to the Equilibrium will move to right the because the
equilibrium position in the following reaction is exothermic
reaction when the temperature is
decreased.
Give a reason for your prediction:
CO(g) + 2H₂(g) <-> CH₃OH(g) ΔH = -
91 kJ mol⁻1
Predict what will happen to the equilibrium position in the Equilibrium will move to left the
because there are more molecules on the left hand following reaction when the pressure is
decreased. Give a side
reason for your prediction: CO(g) +
2H₂(g) <-> CH₃OH(g) ΔH = -91 kJ
mol⁻1
State the raw materials used in the nitrogen from air and hydrogen from natural gas
manufacture of ammonia
State a use for N₂ making ammonia
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