6
Why does ammonia gas diffuse faster than hydrogen chloride gas?
proton
number of number of number of
particle
A Ammonia has a higher boiling
point than
hydrogenneutrons
chloride.
number
protons
electrons
1
B
C
Ammonia is aMg
base, hydrogen
an acid. electrodes
12 chloride is12
W
12
beaker
2+
The ammoniaMg
molecule
contains
more atoms
chloride
12
12 than a hydrogen
12
X molecule.
Test Prep WS 1
The relative molecular
mass
than
chloride.
F
Y of ammonia9is smallerpotassium
10 that of hydrogen
9
4
bromide crystals
1 2014 WIN P12 Q07 F–
9
9
10
Z
7
The lamp
compound
formed
X and Y
is ionic.crystals.
8 The
experiment
shown
is used toelements
test potassium
bromide
does not
light.between
What are the values of W, X, Y and Z in the table above?
Which statement
aboutadded
elements
X beaker
and Y isand
correct?
Distilled
water is then
to the
the lamp lights.
D
alt
W
X
Y
Z
A X and Y are both at the left-hand side of the Periodic Table.
Which statement explains these results?
12atlamp
9
10 of the Periodic Table.
B A X and10
Y are both
the right-hand
side
A Electrons are free to move in the solution when potassium bromide dissolves.
B
12
10
9
10
C X and Y are both transition elements.
B C Metal12
ions are free
bromide melts.
10 to move
10 when potassium
9
D X is at the opposite side of the Periodic Table from element Y.
C D Metal12
ions are free
reacts
with water.
electrodes
12 to move
10 when potassium
9
© UCLES
5070/12/O/N/14
over
D 2014
Oppositely chargedbeaker
ions are free to move
in the solution when potassium bromide[Turn
dissolves.
2 2014 WIN P11 Q06
Which statement describes ionic bonding?
potassium
Why does ammonia gas diffuse faster than hydrogen bromide
chloride crystals
gas?
A a lattice of ions in a sea of electrons
3
A
alight.
higher boiling point than hydrogen
chloride.
The Ammonia
lamp doeshas
not
B
electrostatic
attraction
between oppositely charged ions
Ammonia
is awith
base,
hydrogen chloride
is an acid.
3 B
Limestone
reacts
hydrochloric
acid.
C
the sharing
electrons
atomsand
to gain
a noble
gas configuration
Distilled
water isofthen
added between
to the beaker
the lamp
lights.
C
The
ammonia
molecule
contains
more
atoms
than
a
hydrogen
molecule.
Changing
which of
reaction
condition
does not
the rate
of reaction?
D
the transfer
electrons
from atoms
of a affect
non-metal
to the
atomschloride
of a metal
Which statement explains these results?
D
relative molecular
mass of ammonia is smaller than that of hydrogen chloride.
A The
concentration
of the acid
A Electrons are free to move in the solution when potassium bromide dissolves.
WIN P11 Q09
3 2014
B limestone
particle size
B
Metal
ions are
to four
move
when potassium
bromide
melts.
9
Which
molecule
hasfree
only
electrons
involved
in
covalent
bonds?
© UCLES 2014
5070/11/O/N/14
[Turn over
C pressure
C Metal ions are free to move when potassium reacts with water.
B CO2
C Cl 2
D N2
A H2S
D temperature
D Oppositely charged ions are free to move in the solution when potassium bromide dissolves.
6
8
2014 WIN P12 Q09
4 4 A particle contains 34 protons, 45 neutrons and 36 electrons.
9 How many electrons are used in covalent bonding in the N2 molecule?
Which symbol is correct for this particle?
A 2
B 4
C
A
79
34 Se
B
79
−
34 Se
C
6
D
10
79
2−
34 Se
D
79
2+
34 Se
CH=CH2, has a very low boiling point because of the weakness of the
105 2015
Propene,
SUM CH
P113Q05
5
Which
molecule
A
C–C
bond. contains three shared pairs of electrons between two of its atoms?
A
B
CO2 bond.
C=C
C
C–H bond.
B
C2H4
C
H2O
D
N2
6 UCLES
What
happens
©
2014
D
A
when sodium chloride melts?
5070/11/O/N/14
intermolecular forces.
Covalent bonds in a giant lattice are broken.
B Electrons
are released
from
11 What
is the empirical
formula
of atoms.
a compound containing 12 g of carbon, 2 g of hydrogen and 16 g
of oxygen only?
C Electrostatic forces of attraction between ions are overcome.
C CH2O
D C2HO
A CHO
B CHO2
D Molecules are separated into
ions.
7
Which compound contains only eight covalent bonds?
Abul Fazal
© UCLES 2014
A
B
C
D
CH2OH
CH2OH
COOH
COOH
CH2OH
CH3
COOH
5070/12/O/N/14
CH2OH
Test Prep WS 1
32
5
An aqueous solution of zinc chloride is tested by adding reagents.
7
6 2016 WIN P11 Q12
Which observation is correct?
12 An ionic compound has the formula XY, where Y is a non-metal.
reagent added to zinc chloride (aq)
Which statement about XY is correct?
observations
alt
8
A
acidified aqueous barium nitrate
forms a white precipitate
A An atom of X has lost at least one electron to form a positive ion.
21 The carbonate, chloride and sulfate of a metalforms
are alla soluble
in water. soluble in
white precipitate,
B
aqueous ammonia
B Both X and Y share a pair of electrons.
excess of the reagent
What is the metal?
C Element X is also a non-metal.
forms a white precipitate, insoluble
C
aqueous sodium hydroxide
A barium
in excess of the reagent
D XY will not conduct electricity when liquid.
B Dcalcium
powdered copper
forms a grey precipitate
C
potassium
In an
experiment, 1 cm3 of a gaseous hydrocarbon, Z, requires 4 cm3 of oxygen for complete
2017 SUM P11 Q06
combustion to give 3 cm3 of carbon dioxide. All gas volumes are measured at r.t.p.
DHowsilver
many of the molecules shown contain only one covalent bond?
Which formula represents Z?
Cl 2
H2
HCl
N2
O2
22 Which
contains
percentage
of
nitrogen
by
mass?
H2
B the
C2Hhighest
C
C
H
D
C
H
A C2fertiliser
4
3 4
3 8
A 2
B 3
C 4
D 5
13
7
6
A
14
78
8
ammonium nitrate, NH4NO3; formula mass is 80
II) sulfate (NH
is electrolysed
using
copper
as the positive electrode and carbon as
Aqueous
copper(
5 mass
is 149
B
ammonium
phosphate,
4)3PO4; formula
Which
substance
the
negative
2017
WIN
P12electrode.
Q08 has a giant covalent structure and contains atoms of more than one element?
)2SO4; formula
CX represents
ammonium
(NH
thesulfate,
element
of4atomic
number mass
8 andisY132
represents the element of atomic number 19.
A diamond
Which
row gives correct information about this electrolysis?
D potassium nitrate, KNO3; formula mass is 101
The
elements react together to form a compound.
B two
graphite
positive electrode
negative electrode
electrolyte
C methane
Which
row is correct for the compound formed?
23 Which
of conditions
is used in thecopper
contact
process?
A setelectrode
dissolves
deposited
stays a constant blue colour
D sand
formuladissolves type hydrogen
of bondinggas given off blue colour becomes more intense
B
electrode
temperature
pressure
catalyst
/ °CY2Xgas given/ atm
A hydrogen
C
off covalent
oxygen gas given off
stays a constant blue colour
8 Which statement correctly explains why chlorine, Cl 2, at 40 °C diffuses more slowly than neon,
Ne,
°C?
A
100Y2gas
D
oxygen
hydrogen
stays a constant blue colour
B at 20
X given off1
ionic Vgas
2O5 given off
300
X2Y a relative1000
covalent
ABC Chlorine
has
molecular
massFe
of 71 whilst neon has a relative atomic mass of 20.
15 Molten
salts450
ofis
1 electrolysed.
Feneon.
Xfour
Y ametals
ionic than
2at
BCD Chlorine
higherare
temperature
1 neon
V2O5number of electrons for one mole of atoms to be
The
of450
which
metal and
require
the
CD ions
Chlorine
is diatomic
is smallest
monatomic.
liberated
duringformula
electrolysis?
99 2018
The
of a liquid
compound
WIN
P12 Q24
D empirical
Chlorine
is more reactive
than
neon. is C2H4O.
A diagram
aluminium
24 The
shows part
of theitPeriodic
Table.to know
To find the empirical
formula,
is necessary
9
BMetals
calcium
conduct electricity.
A the density of the compound.
C iron
The the
movement
of which
particlesby
is mass
responsible
for this conductivity?
B
percentage
composition
of the compound.
D sodium
A the
anions
C
relative molecular mass of the compound.
Z
Y
X
B the
cations
D
volumeW
occupied by 1 mole of the compound.
16 Which two products are formed during photosynthesis?
C electrons
Which
two letters represent elements that can react together to form covalent compounds?
A carbon dioxide and water
g
of hydrated copper(II) sulfate crystals are heated to produce anhydrous copper(II) sulfate
10 25.0
D W
protons
A
and
X and oxygen
B W and Y
C X and Y
D Y and Z
and chlorophyll
water vapour.
B
C
glucose and oxygen CuSO .5H O(s)
4
2
CuSO4(s) + 5H2O(g)
[Turn over
D 2017
glucose
© UCLES
and water
5070/11/M/J/17
What is the mass of anhydrous copper(II) sulfate formed?
[Mr: CuSO4, 160; H2O, 18]
© UCLES 2016
Test A
Prep9.0
WSg1
5070/11/O/N/16
B
16.0 g
C
22.5 g
D
25.0 g
[Turn over
Abul Fazal
3
Answers
1
2
3
4
5
6
7
8
9
D
alt
B
A
C
D
A
B
B
D
Abul Fazal
Test Prep WS 2