Section A
1. Which of the following is an
alkali metal?
A.
B.
C.
D.
copper
magnesium
lithium
lead
2. Which of the following is a
description of a dilute solution?
A. A large quantity of solute
dissolved in a small volume of
solvent
B. A small quantity of solute
dissolved in a small volume of
solvent
C. A small quantity of solute
dissolved in a large volume of
solvent
D. A small volume of a solution
which contains a large mass of
solute
3. Which of the following is a true
statement about air?
A. Air is a compound of nitrogen
and oxygen
B. Argon makes up approximately
1% of air
C. The most reactive gas in air is
nitrogen
D. Oxygen makes up approximately
50% of air
4. Which of the following reactions
will have the fastest reaction rate?
A. zinc lump added to 1 mol l–1
hydrochloric acid
B. magnesium lump added to
1 mol l–1 hydrochloric acid
C. zinc powder added to 2 mol l–1
hydrochloric acid
D. magnesium powder added to
2 mol l–1 hydrochloric acid
 Pegasys 2010
5. Two different ions of
63
Cu will have
A. the same number of protons and a
different number of electrons
B. the same number of neutrons and the
same number of electrons
C. the same number of protons and a
different number of neutrons
D. the same number of electrons and a
different number of neutrons
6. The addition of silver(I)nitrate solution
to potassium chloride solution produces
solid silver(I)chloride and potassium
nitrate solution. Which of the following
equations represents this reaction?
A. Ag+(aq) + NO3– (aq) + P+(aq)+ Cl– (aq)
 Ag+ Cl– (s) + P+(aq) + NO3– (aq)
B. Ag+(aq) + NO3– (aq) + K+(aq)+ Cl– (aq)
 Ag+ Cl– (s) + K+(aq) + NO3– (aq)
C. Ag+(s) + NO23– (aq) + K+(aq)+ Cl– (aq)
 Ag+ Cl– (s) + K+(aq) + NO23– (aq)
D. Ag+(aq) + NO3– (aq) + K+(aq)+ Cl– (aq)
 Ag+ Cl– (s) + K+(aq) + NO3– (aq)
7. ‘A three dimensional array of positive
ions held in position by delocalised
electrons’
This is a description of
A.
B.
C.
D.
covalent bonding
polar covalent bonding
ionic bonding
metallic bonding
8. The formula of sodium sulphate is
A.
B.
C.
D.
NaSO4
Na2SO4
S2SO4
SoSO4
9. 05 mole of nitrogen gas has a mass of
A.
B.
C.
D.
14g
14g
28g
28g
10. Which of the following diagrams
best represents a diatomic element?
A.
B.
12. Which of the following is true
for isotopes?
A. They have the same atomic number but
a different mass number
B. They have the same atomic number and
the same mass number
C. They have the same mass number but
a different atomic number
D. They have the same number of neutrons
but a different number of protons
13. Which of the following is not a unit of
reaction rate?
A.
B.
C.
D.
mole l 1
mole l 1 s 1
s–1
g l–1s–1
14. What is the name of the compound with
the formula CoCl2
C.
D.
11. Passing electricity through
copper(II)chloride solution causes
A. copper ions to move to the positive
electrode where they gain one electron.
B. chloride ions to move to the positive
electron where they gain one electron.
C. copper ions to move to the negative
electrode where they gain two
electrons.
D chloride ions to move to the positive
electron where they lose two electrons.
 Pegasys 2010
A.
B.
C.
D.
cobalt(II)chloride
cobalt(I)chloride
carbon(II)chloride
cobalt(II)carbide
15. Which of the following covalent bonds
is not polar?
A.
B.
C.
D.
C–O
C – Cl
C–F
C–C
16. The diagram below shows the
fractional distillation of crude oil.
19.
The compound above has an isomer called
Compared to the gasoline fraction,
the heavy gas oil fraction
A
B.
C.
D
has a lower viscosity
has lower flammability
has a lighter colour
has a lower boiling point
17. The general formula for the
homologous series the alkenes is
CnH2n.
Which of the following could be
an alkene?
A CH3CH2CH2CH3
B CH3CH2CCCH3
C CH3CH (CH3)CHCH2
D CH3C(CH3)2CH2CH3
18. Using a bunsen burner with
the air hole closed to heat water in
a beaker causes the bottom of the
beaker to be covered in soot. This
happens because
A. of incomplete combustion of the
gas
B. the rough surface of the glass
attracts dirt
C. very hot glass has a dark
appearance
D. carbon dioxide gas is sticking to
the glass
 Pegasys 2010
A.
B.
C.
D.
propene
cyclobutane
methylpropane
pent-2-ene
20. In which of the following pairs do both
compounds react with Benedict’s
solution?
A.
B.
C.
D.
fructose and sucrose
sucrose and starch
starch and sucrose
maltose and fructose
Questions 21 and 22 are based on the
reaction between ethanoic acid and
methanol.
21. One of the products of the above reaction is
A.
B.
C.
D.
ethyl ethanoate
methyl ethanoate
ethyl methanoate
methyl methanoate
22. This reaction is an example of
A.
B.
C.
D.
hydrolysis
hydration
condensation
dehydration
23. The conversion of starch into
a monosaccharide involves
A.
B.
C.
D.
hydrolysis of a natural polymer
a condensation reaction
the reverse of respiration
the cracking of natural polymers
24. The monomer used to produce
polypropene has the molecular
formula
A.
B.
C.
D.
C2H4
C3H8
C3H6
C2H6
25. Fatty acids are produced by
A.
B.
C.
D.
the hydrolysis of oils
respiration
the hydrogenation of oils
the digestion of protein
26. Protein molecules must contain
A.
B.
C.
D.
28. C8H18  C4H10 + X
In the above balanced equation the
letter X represents
A.
B.
C.
D.
C4H10
C4H8
C2H4
C6H6
29. Any monomer which can be used to
produce a condensation polymer must
contain
A.
B.
C.
D.
two reactive functional groups
a carboxyl group
a hydroxyl group
a carbon to carbon unsaturated bond
30. How many ester links are present
in a fat molecule?
A.
B.
C.
D.
1
2
3
4
–NH2 groups
ester links
-COOH groups
peptide links
27. Which of the following substances
is a synthetic polymer used to
produce protective body armour?
A.
B.
C.
D.
poly(ethenol)
kevlar
polystyrene
biopol
Remember to place the answer grid for section A inside your exam paper.
 Pegasys 2010
Section B
50 marks are available in this part of the paper.
1.
Atoms can be represented as shown below.
19
F
a)
Use the representation above and your data booklet to complete the table
below.
Protons
Electrons
Neutrons
2
b)
The electron arrangement of fluorine is given in the data booklet as 2,7.
Write the electron arrangement in this form for the fluoride ion.
_________________________________________________________________ 1
c)
The relative atomic mass (R.A.M.) of chlorine is 355 yet no chlorine atom
actually has a mass of 355 a.m.u. Explain how it is possible to have a
fraction in an element’s R.A.M.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
1
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 Pegasys 2010
2.
Dry carbon monoxide gas can be prepared by passing carbon dioxide gas over
hot carbon powder. Any unreacted carbon dioxide can be removed by bubbling
the gas mixture through sodium hydroxide solution and the pure carbon
monoxide can be dried by using concentrated sulphuric acid. The carbon
monoxide is then collected in a syringe.
A pupil made the following diagram of the equipment needed for this experiment.
To syringe
a)
Fill in the missing chemical names in the above diagram
1
b)
Why would it be foolish to collect the gas produced by bubbling it through
water into a cylinder?
________________________________________________________________
________________________________________________________________
c)
1
Carbon monoxide must not be allowed to escape into the room. Why is this?
________________________________________________________________
1
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 Pegasys 2010
3.
The dissolving of sodium hydroxide in water is an exothermic process.
a)
Explain the term exothermic.
________________________________________________________________
________________________________________________________________
b)
1
04 g of sodium hydroxide was dissolved in water and the solution was
made up to 100 ml. Calculate the concentration of the final solution in
mol l-1.
2
c)
Sodium hydroxide solution can also be produced by adding sodium
metal to water. The equation below shows this reaction.
Balance this equation.
Na
+
H2 O
NaOH
+
H2
1
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4.
The bonds in a water molecule are polar covalent.
a)
What is the difference between polar covalent and a pure covalent bond?
_________________________________________________________________
_________________________________________________________________ 1
b)
 Pegasys 2010
Draw a diagram of a water molecule, showing all the outer energy level
electrons.
1
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5.
Polyethene is a widely used polymer. It can be produced as follows:
Crude oil undergoes fractional distillation and the refinery gas fraction is further
fractionally distilled to produce ethane. The ethane is then thermally cracked to
produce ethene and hydrogen. The hydrogen is piped to a Haber plant where it is
reacted with nitrogen to produce ammonia. The ethene then undergoes
polymerisation to produce polyethene.
a)
Use this information to complete the flow diagram below.
represents a
process
represents a substance
nitrogen
b)
4
The nitrogen used in the Haber process is obtained by fractional distillation of
liquid air. What property allows this process to separate the different gases in air?
_________________________________________________________________ 1
c)
 Pegasys 2010
Use full structural formulae to show a fragment of a polyethene chain
containing three repeating units.
1
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6.
A student was testing three hydrocarbon samples with bromine water.
She obtained the following results.
Molecular
formula
Reaction with bromine water
A
C5H10
No immediate reaction
B
C5H12
No immediate reaction
C
C5H10
Bromine water decolourised immediately
a)
Suggest a name for compound B.
_________________________________________________________________ 1
b)
Which structural feature is causing compound C to react immediately with
the bromine water?
_________________________________________________________________ 1
c)
Draw the full structural formula of compound A.
1
d)
Bromine water is produced by dissolving bromine potassium bromide
solution because bromine will not dissolve easily in pure water.
Why is this?
_________________________________________________________________
_________________________________________________________________ 1
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 Pegasys 2010
7.
The boiling points of several alkanols are given on page 6 of the data book.
a)
Use this information to suggest a value for the boiling point of pentan-1-ol.
________oC
1
b)
Alkanols can be dehydrated to produce alkene(s).
i.
Name the compound used to dehydrate alkanols.
_________________________________________________________________
1
ii.
If butan-2-ol is dehydrated, two different alkenes are produced.
Name and draw the shortened structural formulae for these
alkenes.
2
c)
 Pegasys 2010
Ethanol can be oxidised to produce ethanoic acid.
One mole of ethanoic acid can be produced from one mole of ethanol.
Calculate the mass of ethanoic acid which can be produced from 2•3g of
ethanol.
2
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8.
Carbonyls are compounds which contain a carbon to oxygen double bond.
There are two different homologous series of carbonyls, namely alkanals and
alkanones. The alkanone with four carbons is called butanone.
Alkanal structure
Alkanone structure
( R, R’ and R” represent alkyl groups e.g. methyl, ethyl or propyl etc.)
a)
Name the alkanone containing two methyl groups.
___________________________________________________________________
1
b)
The first three members of the alkanal series have the structural formulae
HCHO
CH3CHO
CH3CH2CHO.
What is the general formula of the alkanals?
1
c)
Carbonyl compounds can be reduced to the corresponding alkanol as
shown below.
Complete the following equation with the full structural formula of the
product(name not required).
 Pegasys 2010
1
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9.
A pupil used the reaction between sodium persulphate solution and potassium
iodide solution to study the effect of concentration on reaction rate. Iodine is a
product of this reaction and the reaction time for different concentrations of the
persulphate solution was noted by timing when the iodine appeared. This was very
difficult because the iodine appeared as a very pale yellow colour. This problem was
overcome by using an indicator which reacts with the iodine.
a)
i.
Name the indicator used.
__________________________________________________________
ii.
1
What colour change would be seen?
__________________________________________________________
1
Another pupil was investigating the effect of temperature on reaction rate.
(P.P.A. 2 unit 1) The reaction used was
Na2S2O3(aq) + 2HCl(aq)  2NaCl(aq) + S(s) + H2O(l) + SO2(g)
b)
Which of the above products causes the reaction mixture to turn cloudy?
________________________________________________________________
c)
1
Identify one of the spectator ion in the above reaction.
________________________________________________________________
d)
The pupil obtained the following results for his experiment.
Temperature (oC)
22
32
39
49
 Pegasys 2010
Reaction time(s)
76
32
12
Reaction rate(s-1)
0•013
0•025
0•031
0•083
1
Calculate the missing reaction time
_________s
e)
1
Use the results given in part d) to draw a graph of reaction rate(s-1)
versus temperature(oC) on the graph paper below.
2
f)
One of the pupils in the class had asthma (a breathing problem).
Why would it be advisable for her to stand well back from the reaction
mixture?
_______________________________________________________________
_______________________________________________________________
 Pegasys 2010
1
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10.
A shortened version of the periodic table is shown below. Some of the elements
have been identified by letters. These letters are not the symbols of these elements.
A
C
B
D
E
F
G
H
I
Which letter(s) in the above table represents
a)
A monatomic gas which is lighter than air. ____________________
1
b)
Two elements in period 4
____________________
1
c)
A metallic element in group 4
____________________
1
d)
Two elements which form a covalent compound
with tetrahedral shaped molecules
____________________
1
d)
 Pegasys 2010
The transition metals are not included in the shortened periodic table
shown above. Only one of them is not a metallic solid.
Name this element.
______________________________________________________________
11.
1
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Esters and proteins are two classes of compounds formed by condensation
reaction(s).
a)
Name the other substance produced during these condensation reactions.
__________________________________________________________
b)
The diagram below shows the structure of aspirin.
i.
c)
 Pegasys 2010
1
What is the molecular mass of aspirin?
__________________________________________________________
1
ii.
1
Circle, in the structure above, the ester link.
Proteins are polymers built up from amino acids. These monomers are
joined together by peptide links. Draw the full structural formula of a
peptide link.
1
d)
Hormones are proteins in our bodies. They help regulate many life
processes. Name one of these hormones.
__________________________________________________________
END OF QUESTION PAPER
 Pegasys 2010
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