chemistry

1. the table shows the melting and boiling points of four elements.
which element is a gas at room temperature and pressure?
[| rating poit-c [boing pot c |

a —101 -35
b 7 59
cc 10 100
d 113 445

2 four statements about the arrangement or movement of particles are given.
1 particles are packed in a regular arrangement.
2. particles are randomly arranged.
3. particles move over each other.
4 particles vibrate about fixed points.
which statements describe the particles in a pure solid?
a iand3 b 1and4 c 2and3 d 2and4

3 one atom of an element contains 12 electrons, 12 protons and 13 neutrons.
how many nucleons does this atom contain?
a 12 b 13 c 24 d 25

4 adiagram representing a mixture of four particles is shown.
which statement describes the mixture of particles?
a_ lt is a mixture of two different compounds.
b_itis a mixture of two different elements.
c_itis a mixture of four different compounds.
d_itis a mixture of four different elements.

5 chlorine reacts with sodium to form sodium chloride.
what happens to the sodium atoms during this reaction?
a_ they gain electrons to form anions.
b_ they lose electrons to form anions.
c_ they gain electrons to form cations.
d_ they lose electrons to form cations.

6 nitrogen monoxide, no, is a simple molecular compound.
which row shows the properties of nitrogen monoxide?
boiling point elecinical
conductivity
a high good
b high poor
cc low good
d low poor

7 metal x is in group ii of the periodic table.
x is reacted separately with dilute sulfuric acid and with oxygen.
which row identifies the products of each reaction?
| i | meta oneen
a xsoy, and he xo
b xso, and he xoz
cc x2s04 and he xo
d x2so, and h2 xo2

8 what is the relative molecular mass, m,, of sulfuric acid, h2so,?
a 81 b 82 c 97 d 98

9 the equation for the production of ammonia, nhs, is shown.
n2(g) + 3h2(g) > 2nhs(g)
which mass of nitrogen is required to make 51 tonnes of ammonia?
a 21 tonnes b 25.5 tonnes c 42 tonnes d 84 tonnes

10 the diagram shows the apparatus used to electroplate a nickel shape with silver.
power
supply
silver rod na
r nickel shape
u electrolyte
which row identifies the negative electrode, the positive electrode and the electrolyte?
| | negative electrode positive electrode electrolyte
a silver rod nickel shape aqueous nickel nitrate
b nickel shape silver rod aqueous silver nitrate
cc nickel shape silver rod aqueous nickel nitrate
d silver rod nickel shape aqueous silver nitrate

11 concentrated aqueous sodium chloride and dilute sulfuric acid are each electrolysed separately
using inert electrodes.
three statements about the electrolysis of these electrolytes are listed.
1 agas is produced at each electrode for both electrolytes.
2 oxygen is produced at the cathode for both electrolytes.
3 hydrogen is produced at the cathode for both electrolytes.
which statements are correct?
a 1and3 b= 1 only c 2only d = 3only

12 which reaction pathway diagram represents an endothermic reaction?
a b
reactants products
energy energy
products reactants
progress of reaction progress of reaction
cc d
reactants
reactants products
energy energy | ———_———_
products
progress of reaction progress of reaction

13 the diagram shows a match.
by striking the match, a chemical reaction takes place.
which row describes the chemical reaction?
a endothermic because energy is given out as the match burns
b endothermic because energy is used to strike the match
cc exothermic because energy is given out as the match burns
d exothermic because energy is used to strike the match

14 hydrogen peroxide decomposes to form water and oxygen. the equation is shown.
2h20,(l) + 2h2o0(i) + o2(g)
manganese(iv) oxide catalyses this reaction.
which statements about manganese(iv) oxide are correct?
1 it increases the rate of the reaction.
2 itincreases the total volume of oxygen gas produced at the end of the reaction.
3 it will have the same mass at the end of the reaction as it does at the start of the
reaction.
a 1,2and3 b 1dand2only c t1and3only d = 2and3only

15 four students collect the gas produced from the reaction of calcium carbonate with dilute
hydrochloric acid. each student records the time taken to collect a volume of gas.
which results show the highest average rate of reaction?
a_ 15cm of gas collected in 20 seconds
b 50cm? of gas collected in 40 seconds
c 75cm* of gas collected in 80 seconds
d 90cm? of gas collected in 100 seconds

16 the equation for the reaction between hydrogen and oxygen is shown.
2h2(g) + o2(g) > 2h20(g)
which statement explains why this is a redox reaction?
a_ both oxidation and reduction take place.
b_ heat energy is released to the surroundings.
c_ hydrogen is a reactant.
d_ the reaction can be reversed.

17. which statements about dilute ethanoic acid are correct?
1 ithasaphof8.
2 it is an organic compound.
3 it turns universal indicator orange-yellow.
4 it reacts with magnesium to produce carbon dioxide.
a iand3 b 1and4 c 2and3 d 2and4

18 an aqueous solution of z turns universal indicator paper purple.
which row identifies the colour of methyl orange and of thymolphthalein when they are added
separately to an aqueous solution of z?
| | methyl orange thymolphthalein
a yellow blue
b yellow colourless
cc red blue
d red colourless

19 which row describes the solubility of lead(ii) chloride and lead(ii) sulfate in water?
yes eenae [eats
a soluble soluble
b soluble insoluble
cc insoluble soluble
d insoluble insoluble

20 four different groups of oxides are shown.
1 mgo feo cuo
2 cao so, tio,
3 pbo cao cl,0
4 no, brao p205
which statement about these groups of oxides is correct?
a 1,2 and 3 contain basic oxides only.
b 2,3 and 4 contain basic oxides only.
c_ 1 contains basic oxides only, and 4 contains acidic oxides only.
d1 contains acidic oxides only, and 4 contains basic oxides only.

21 four steps in the preparation of a soluble salt from a dilute acid and a solid metal oxide are listed.

1 warm the dilute acid.
2 evaporate the solution to half of its volume and allow to cool.
3 add excess metal oxide.
4 filter to remove any unreacted solid.

what is the correct order for these steps?

a 1525354

b 1535452

c 3515254

d 3>54>51>2

22 which pair of elements react together most violently?
a chlorine and lithium
b_ chlorine and potassium
c iodine and lithium
d_ iodine and potassium

23 rubidium is an element in group | of the periodic table.
which row describes a physical property and a chemical property of rubidium?
[| phil oper) [cherie propery
a hard reacts with water
b hard does not react with water
cc soft reacts with water
d soft does not react with water

24 which row describes the state and colour of bromine at room temperature and pressure?
[sate | eaour |
a liquid red-brown
b liquid grey-black
cc solid red-brown
d solid grey-black

25 part of the periodic table is shown.
which element is a metal?

lj |
| | | | [pic] | |
| || al |
ptt tet tt pt tt et yy
pet tt it ttt tt ee te tt tt yt

26 which compound is made from elements that are all in the same period?
a alz(soa)3 b  c2hsoh c  lino3 d_ nasalfe

27 silver metal is separately tested with cold water, with steam and with dilute hydrochloric acid.
which row identifies the tests that show the chemical reactivity of silver?
cold water steam dite
hydrochloric acid
a jv jv v key
b x v jv v= reaction
cc x x jv x = no reaction
d x x x

28 which statement about the extraction of iron from hematite is correct?
a airis blown into the blast furnace to oxidise the molten iron.
b carbon dioxide is reduced by coke to carbon monoxide.
c hematite is oxidised by carbon to molten iron.
d_ the slag produced is denser than molten iron.

29 what is an alloy?
a acompound of two metallic elements
b  acompound of metallic and non-metallic elements
c  amixture of a metal and at least one other element
d  apure metallic element

30 the diagram shows an experiment to investigate how paint affects the rusting of iron.
ss t
iron painted iron
air
water

what happens to the water level in tubes s and t?
[wees [ae

a falls rises

b no change rises

cc rises falls

d rises no change

31 which statement describes clean, dry air?
a_ itis acompound containing about 78% nitrogen and 21% oxygen only.
b_itis a mixture of about 21% nitrogen and 78% oxygen only.
c_itis a mixture of several gases, including nitrogen and oxygen.
d_itis a compound containing nitrogen, oxygen, carbon dioxide and other gases.

32 which word equation describes photosynthesis?
a_ carbon dioxide + water > glucose + oxygen
b_ glucose + water > carbon dioxide + oxygen
c_ carbon dioxide + oxygen — glucose + water
d_ glucose + oxygen —> carbon dioxide + water

33 some adverse effects caused by air pollutants are listed.
e acid rain
e photochemical smog
e respiratory problems
which air pollutant contributes to all three of these adverse effects?
a_ carbon monoxide
b_ oxides of nitrogen
c methane
d particulates

34 petroleum is an important raw material that is separated into useful products.
which terms describe petroleum and the method used to separate it?
a compound cracking
b compound fractional distillation
cc mixture cracking
d mixture fractional distillation

35 which statements about homologous series are correct?
1 all carboxylic acids have similar chemical properties.
2 allalcohols have the same molecular mass.
3 ethane and ethene are members of the same homologous series.
4 ethane and propane are members of the same homologous series.
a i1and3 b 1and4 c 2and3 d 2and4

36 the formulae of two organic compounds, p and q, are shown.
p q
ch3ch2ch20h ch3ch=chch3
which type of organic compounds are p and q?
a alcohol alkane
b alcohol alkene
cc carboxylic acid alkane
d carboxylic acid alkene

37 which fuel is manufactured by fermentation?
a diesel
b_ ethanol
c_ hydrogen
d_ kerosene

38 which statement about the disposal of waste plastics is correct?
a they are put in landfill sites, where they quickly decompose.
b_ they are burned to produce non-toxic products.
c_ they accumulate in oceans, where they are harmful to aquatic life.
d_ they are dissolved in water and pumped into the sea.

39 dyes are coloured substances.
the chromatogram of substance x and four different dyes, 1, 2, 3 and 4, is shown.
x 1 2 3 4
substance x contains only two of the dyes 1, 2, 3 and 4.
which two dyes are present in substance x?
a 1and2 b iand4 c 2and3 d 3and4

40 the results of two tests on substance g are listed.
e a flame test produces a yellow flame.
e substance g is added to aqueous sodium hydroxide and powdered aluminium and
warmed carefully. a gas is given off which turns damp red litmus paper blue.
what is g?
a potassium chloride
b potassium nitrate
c sodium chloride
d sodium nitrate

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