1
1
The diagram shows the apparatus used to separate the different components of a mixture by
chromatography.
chromatography paper
solvent front
spot
baseline
solvent
Which statement about this experiment is correct?
A
A locating agent is used to find the position of the solvent front.
B
The components to be separated must be soluble in the solvent.
C
The baseline on which the spot of the mixture is placed is drawn in ink.
D
The Rf value is calculated by
[1]
[Total: 1]
2
2
Some students carried out the experiment shown in the diagram.
contents
of beaker
mixture of powdered copper
metal and copper(II)
sulfate crystals
filter
paper
glass
rod
residue
funnel
beaker
filtrate
evaporating
basin
water
heat
What is left in the evaporating basin after gentle heating?
A
copper
B
copper(II) hydroxide
C
copper(II) oxide
D
copper(II) sulfate
[1]
[Total: 1]
3
Which statements about isotopes of the same element are correct?
1.
They are atoms which have the same chemical properties because they have the
same number of electrons in their outer shell.
2.
They are atoms which have the same number of electrons and neutrons but
different numbers of protons.
3.
They are atoms which have the same number of electrons and protons but different
numbers of neutrons.
A
1 and 2
B
1 and 3
C
2 only
D
3 only
[1]
[Total: 1]
3
4
Which reactions could take place at the anode during electrolysis?
−(aq)
1
2H
4OH
−(aq)
2
2Cl
3
Cu
4
2H
−
2O(I)
Cl
−
2(g)
2+(aq)
+(aq)
+ O2(g) + 4e
+ 2e
+ 2e−
+ 2e−
Cu(s)
H
2(g)
A
1 and 2
B
1 and 4
C
2 and 4
D
3 and 4
[1]
[Total: 1]
5
Magnesium nitride is formed when magnesium burns in air. Magnesium nitride is an ionic
compound.
What is the formula of magnesium nitride?
A
MgN2
Mg2N2
B
Mg2N3
Mg3N2
C
D
[1]
[Total: 1]
6
Propane, C3H8, burns as shown.
C3H8 + ...O2
3CO2 + 4H2O
Which number of oxygen molecules balances the equation above?
A
4
B
5
C
7
D
10
[1]
[Total: 1]
7
The equation for the reaction between calcium carbonate and hydrochloric acid is shown.
CaCO3(s) + 2HCl (aq)
CaCl 2(aq) + H2O(I) + CO2(g)
How many moles of calcium carbonate will give 24 cm
3 of
carbon dioxide when reacted with an
excess of the acid?
A
1 mol
B
0.1 mol
C
0.01 mol
D
0.001 mol
[1]
[Total: 1]
4
8
A compound, X, contains 40.0 % carbon, 6.7 % hydrogen and 53.3 % oxygen by mass.
The relative molecular mass, Mr, of X is 60.
What is the molecular formula of X?
A
CH2O
CH4O
C2H4O
B
C2H4O2
C
D
[1]
[Total: 1]
9
The diagram shows a method used to copper-plate a pan.
+
–
pan
copper
copper(II) sulfate
solution
Which equation represents the reaction at the cathode?
A
B
+ 2e−
2+
Cu
Cu
+ 2e−
+
H
2H
2
C
−
O
4OH
D
2−
2O
2
+ 2H2O + 4e
O
2
+ 4e
−
−
[1]
[Total: 1]
5
10 The diagram shows, in cross-section, the arrangement of aluminium and steel wires in an electric
power cable.
key
= aluminium
= steel
Which metal wire is the better conductor and which metal wire has the greater mechanical
strength?
better conductor
greater
mechanical strength
A
aluminium
aluminium
B
aluminium
steel
C
steel
aluminium
D
steel
steel
[1]
[Total: 1]
11
The equation for the burning of butane is shown below.
2C4H10 + 13O2
8CO2 + 10H2O
How many molecules of water are formed when one molecule of butane burns completely?
A
4
B
5
C
8
D
10
[1]
[Total: 1]
12 Zinc reacts with hydrochloric acid to form zinc chloride and hydrogen.
Which equation for this reaction is correct?
A
Zn + HCl
ZnCl + H
B
Zn + 2HCl
C
Zn + H2Cl
ZnCl + H2
D
Zn + 2HCl
ZnCl2 + H2
ZnCl2 + 2H
[1]
[Total: 1]
6
3 of 0.1 mol / dm3 hydrochloric acid exactly neutralises 20 cm3 of aqueous sodium
13 25 cm
hydroxide.
3 of 0.1 mol / dm3 hydrochloric acid exactly neutralises 20 cm3 of aqueous sodium hydroxide.
The equation for this reaction is shown.
NaOH + HCl
NaCl + H2O
What is the concentration of the sodium hydroxide solution?
A
B
C
D
3
0.080 mol / dm
3
0.800 mol / dm
3
0.125 mol / dm
3
1.25 mol / dm
[1]
[Total: 1]
14 Electricity is passed separately through concentrated hydrochloric acid, concentrated aqueous
sodium chloride and dilute sulfuric acid.
In which rows are the electrolysis products correctly named?
A
cathode product
anode product
1
concentrated
hydrochloric acid
hydrogen
chlorine
2
concentrated
aqueous sodium chloride
sodium
chlorine
3
dilute sulfuric acid
hydrogen
oxygen
1, 2 and 3
B
1 and 2 only
C
1 and 3 only
D
2 and 3 only
[1]
[Total: 1]
7
15 When substance X is electrolysed, the amount of gases P and Q formed is shown.
P
Q
substance X
–
+
What is substance X?
A
concentrated aqueous sodium chloride
B
concentrated hydrochloric acid
C
dilute sulfuric acid
D
molten lead(II) bromide
[1]
[Total: 1]
8
16 When anhydrous copper(II) sulfate is added to water a solution is formed and heat is given out.
thermometer
anhydrous
copper(II) sulfate
water
Which row shows the temperature change and the type of reaction taking place?
temperature change
type of reaction
A
decrease
endothermic
B
decrease
exothermic
C
increase
endothermic
D
increase
exothermic
[1]
[Total: 1]
9
17 The energy level diagram for the reaction between sodium hydrogen carbonate and dilute
hydrochloric acid is shown.
sodium chloride + water +
carbon dioxide
energy
sodium hydrogen carbonate +
dilute hydrochloric acid
Which row correctly describes the type of reaction and the energy of the reactants and products?
type of reaction
energy of the reactants
and products
A
endothermic
the products have more
energy than the reactants
B
endothermic
the reactants have more
energy than the products
C
exothermic
the products have more
energy than the reactants
D
exothermic
the reactants have more
energy than the products
[1]
[Total: 1]
10
18 The energy level diagram for the reaction between magnesium and hydrochloric acid is shown.
Mg + 2HCl
energy
MgCl
2
+ H2
Which statement about the reaction is not correct?
A
Energy is given out during the reaction.
B
The products are at a lower energy level than the reactants.
C
The reaction is endothermic.
D
The temperature increases during the reaction.
[1]
[Total: 1]
19 The energy level diagram for the combustion of methane is shown.
CH
4
(g) + 2O2(g)
energy
energy change
CO
2
(g) + 2H2O(g)
Which row gives the equation and energy change for this reaction?
equation
energy change in kJ / mol
A
CH4(g) + 2O2(g)
CO2(g) + 2H2O(g)
+891
B
CH4(g) + 2O2(g)
CO2(g) + 2H2O(g)
−891
C
CH4(g) + 2O2(g)
CO2(g) + 2H2O(I)
+891
D
CH4(g) + 2O2(g)
CO2(g) + 2H2O(I)
−891
[1]
[Total: 1]
11
20 Which reaction is endothermic?
A
acid neutralising alkali causing a temperature increase
B
adding magnesium to hydrochloric acid
C
calcium carbonate decomposing when heated
D
combustion of fossil fuels
[1]
[Total: 1]
21 Solutions of two chemicals are mixed.
A reaction occurs and the temperature change is measured.
Which statement is correct?
A
If the reaction is endothermic, the temperature decreases and energy is taken in.
B
If the reaction is endothermic, the temperature increases and energy is given out.
C
If the reaction is exothermic, the temperature decreases and energy is given out.
D
If the reaction is exothermic, the temperature increases and energy is taken in.
[1]
[Total: 1]
22 In the Periodic Table, how does the metallic character of the elements vary from left to right
across a period?
A
It decreases.
B
It increases.
C
It increases then decreases.
D
It stays the same.
[1]
[Total: 1]
12
23 An element, X, is a dark grey crystalline solid at room temperature.
It has a melting point of 114 °C and a density of 4.9g /cm
3.
When heated gently if forms a purple vapour.
Where in the Periodic Table is X found?
A
B
C
D
[1]
[Total: 1]
24 Which substances react with aqueous potassium bromide to form bromine?
A
B
C
D
chlorine
iodine
✓
✓
✓
✗
✗
✓
✗
✗
[1]
[Total: 1]
13
25 The diagrams show apparatus used to test the reaction of chlorine with different liquids.
1
chlorine
aqueous
potassium bromide
2
chlorine
Universal
Indicator solution
In which test-tubes is an orange-brown colour produced?
A
both 1 and 2
B
1 only
C
2 only
D
neither 1 nor 2
[1]
[Total: 1]
14
26 Part of the Periodic Table is shown.
W
X
Y
Z
Which row correctly describes the properties of elements W, X, Y and Z?
has variable
oxidation states
reacts with
cold water
very
unreactive
has four
outer shell
electrons
A
W
Y
Z
X
B
X
W
Y
Z
C
Z
W
Y
X
D
Z
Y
X
W
[1]
[Total: 1]
27 Part of the Periodic Table is shown.
Which element is a gas that does not form a compound with potassium?
A
C
B
D
[1]
[Total: 1]
15
28 W, X and Y are metals, one of which is copper and one of which is iron.
•
W has a coloured oxide which can be reduced by carbon.
•
X has a black oxide and is also found in nature as a pure metal.
•
Y has an oxide which cannot be reduced by carbon.
Which metal is the most reactive and what is the possible identity of W?
most reactive
metal
possible identity
of W
A
X
Cu
B
X
Fe
C
Y
Cu
D
Y
Fe
[1]
[Total: 1]
29 Some chemical properties of three metals W, X and Y and their oxides are shown.
metal
reaction with steam
reaction with dilute
hydrochloric acid
reaction of metal
oxide with carbon
W
reacts
reacts
reacts
X
no reaction
no reaction
reacts
Y
reacts
reacts
no reaction
What is the order of reactivity of these metals, most reactive first?
A
W
Y
X
B
X
Y
W
C
Y
W
X
D
Y
X
W
[1]
[Total: 1]
16
30 Four metals P, Q, R and S are added to separate aqueous solutions of their ions.
The results are shown.
metal
P
Q
R
S
2+
P
2+
Q
2+
R
2+
S
✗
✗
✓
✓
✓
✗
✓
✓
✗
✗
✗
✗
✗
✗
✓
✗
key
✓ = reaction occurs
✗ = reaction does not occur
What is the order of reactivity of the metals, most reactive first?
A
Q
P
S
R
B
Q
S
P
R
C
R
P
S
Q
D
R
S
P
Q
[1]
[Total: 1]
31 The reaction shown is called the ‘thermite reaction’.
2Al + Fe2O3
2Fe + Al 2O3
Which pair of substances reacts in a similar way?
A
Fe and MgO
B
Fe and ZnO
C
Mg and CuO
D
Zn and Al 2O3
[1]
[Total: 1]
17
32 Copper(II) sulfate is heated strongly. The products are copper(II) oxide and sulfur trioxide.
CuSO4
CuO + SO3
What type of reaction is this?
Tick one box.
addition
neutralisation
oxidation
thermal decomposition
[1]
[Total: 1]
33 Iron is extracted from hematite in the blast furnace.
The hematite contains silicon(IV) oxide (sand) as an impurity.
What reacts with this impurity to remove it?
A
calcium oxide
B
carbon
C
carbon dioxide
D
slag
[1]
[Total: 1]
18
34 Two industrial processes that involve heating are
•
extracting iron from its ore using a blast furnace,
•
making lime.
In which of these processes is calcium carbonate used?
extracting iron
making lime
✓
✓
✓
✗
✗
✓
✗
✗
A
B
C
D
[1]
[Total: 1]
35 Which row shows the conditions used in the manufacture of sulfuric acid by the Contact process?
temperature
/°C
pressure
/ atm
catalyst
A
40
200
Fe
B
40
200
V2O5
C
400
2
Fe
D
400
2
V2O5
[1]
[Total: 1]
36 Which statement about sulfuric acid is correct?
A
It is made by the Haber process.
B
It is made in the atmosphere by the action of lightning.
C
It reacts with ammonia to produce a fertiliser.
D
It reacts with copper metal to produce hydrogen gas.
[1]
[Total: 1]
19
37 Which method of purification would produce water most suitable for drinking?
A
filtration
B
muddy
river
water
chlorination
purified
water
C
settlement
filtration
D
filtration
chlorination
[1]
[Total: 1]
38 In many countries river water is used for the washing of clothes.
The same water is not considered to be safe for drinking.
Why is it not safe for drinking?
A
because river water contains dissolved salts
B
because river water may contain harmful bacteria
C
because river water may contain small particles of sand
D
because river water may contain soap from washing clothes
[1]
[Total: 1]
39 The ions present in ammonium sulfate are formed from the products of the Contact and Haber
processes.
Both of these processes involve the use of a catalyst.
Which row is correct?
ion
formed from
process
catalyst
A
ammonium
ammonia
Contact
iron
B
ammonium
ammonia
Haber
vanadium(V) oxide
C
sulfate
sulfuric acid
Contact
vanadium(V) oxide
D
sulfate
sulfuric acid
Haber
iron
[1]
[Total: 1]
20
40 Ammonia is manufactured by a reversible reaction.
N2(g) + 3H2(g) ⇌ 2NH3(g)
The forward reaction is exothermic.
What is the effect of increasing the pressure on the percentage yield and rate of formation of
ammonia?
percentage yield
rate of
formation
A
decreases
decreases
B
decreases
increases
C
increases
decreases
D
increases
increases
[1]
[Total: 1]