chemistry

1. which conditions cause gas particles to move the fastest and the furthest apart?
[[rempereure [messi
a high high
b low high
cc high low
d low low

2 which statement describes a liquid at room temperature?
a asample of a liquid has a fixed volume and shape.
b_  asample of a liquid does not have a fixed volume or shape.
c_ the particles are touching but can move by sliding over each other.
d_ the particles spread out and fill all available space.

3 acompound, x, has a melting point of 71°c and a boiling point of 375°c.
which statement about x is correct?
a ltisa liquid at 52°c and a gas at 175°c.
b_itis a liquid at 69°c and a gas at 380°c.
c_ itis aliquid at 75°c and a gas at 350°c.
d_itis aliquid at 80°c and a gas at 400°c.

4 what is the nucleon number of an atom?
a_ the number of neutrons
b_ the number of protons
c the total number of protons and neutrons
d the total number of protons and electrons

5 anatom has three electron shells. there are three electrons in the outer shell.
how many protons and how many neutrons are in this atom?
[ [protons [nets |
a 13 14
b 13 27
cc 14 13
d 21 24

6 which row gives the number of covalent bonds in one molecule of ammonia and in
one molecule of hydrogen chloride?
[| emmeria—[ hyrogen chee |
a 3 1
b 3 2
cc 4 1
d 4 2

7 which statements about the structure and bonding in diamond are correct?
1 each carbon atom in diamond is bonded to three other carbon atoms only.
2 diamond contains many strong covalent bonds.
3 diamond contains layers of carbon atoms, which can slide over each other.
4 diamond has a giant structure.
a 1,2and3 b 2and3o0nly c 2and4 d 4only

8 magnesium burns in oxygen to form magnesium oxide.
the equation for the reaction is shown.
2mg + o2 > 2mgo
which mass of magnesium oxide is formed when 48 g of magnesium is burned?
a 20g b 40g c 80g d 160g

9 propane, c3hs, is burned in a limited amount of oxygen.
which equation represents this reaction?
a c3hg + 502 > 3co2 + 4h20
b c3h,g + 402 > 3co + 4h,0
c c3hs + 402 > 3coz + 2h20 + 2h2
d 2c3hs + 702 > 6co + 8h,0

10 the isotope of which element is used to define the relative atomic mass of other elements?
a - sulfur
b oxygen
c nitrogen
d_ carbon

11 what is the definition of electrolysis?
a __ the formation of a positive ion by the removal of electrons using an electric current
b_ the decomposition of an ionic compound, when molten or in aqueous solution, by the
passage of an electric current
c_ the substance containing ions through which an electric current can pass
d_ the coating of a metal with a different metal by passing an electric current through an
aqueous solution of an ionic salt

12 which statement about electroplating a copper spoon with silver is correct?
a_ both the anode and cathode are made of carbon.
b_ the copper spoon is the anode.
c aqueous copper(ii) sulfate is the electrolyte.
d silver is formed at the negative electrode.

13 which row describes the reaction pathway diagram and energy change in an exothermic
reaction?
[| rection pattway diagram | enereyis |
a reactants higher than products absorbed
b reactants higher than products released
cc reactants lower than products absorbed
d reactants lower than products released

14 the table shows the initial and final temperatures for four different reactions.

raaetion initial final

temperature /°c temperature /°c
1 19 28
2 18 16
3 20 20
4 18 19

which reactions are endothermic?
a 1tand4 b 2and3 c 2only d 4only

15 which process is a chemical change?
a boiling water
b_ cooking an egg
c_ dissolving sugar
d_ melting ice cubes

16 a student reacts strips of zinc with dilute sulfuric acid and measures the time taken to produce
100 cm? of hydrogen.
the experiment is repeated using different conditions.
the results are shown in the table.
of hydrogen/s
2 100
which changes in conditions produce the results shown in experiment 2?
1 adda catalyst.
2 dilute the acid.
3 use zinc powder.
4 heat the acid.
a 1,3 and 4 b tand4only c 2and3 d 2and4

17 when blue copper(ii) sulfate is heated, a white solid and water are formed.
the white solid turns blue and gives out heat when water is added to it.
which terms describe the blue copper(ii) sulfate and the reactions?
|_| blue copper sulfate is

a a mixture can be reversed
b a mixture cannot be reversed
c hydrated can be reversed
d hydrated cannot be reversed

18 which statements about a redox reaction are correct?
1 oxidation is the gain of oxygen.
2 both oxidation and reduction take place in a redox reaction.
3 reduction is the gain of oxygen.
a iand2 b1only c 2and3 d-= 3only

19 which row identifies a basic oxide and describes an alkali?
[| basiconde [desertion ofan ake
a sodium oxide insoluble base
b sodium oxide soluble base
cc sulfur dioxide insoluble base
d sulfur dioxide soluble base

20 which indicators turn blue when added to aqueous ammonia?
1 litmus
2 thymolphthalein
3 universal indicator
a 1,2and3 b 1tand2only c iand3only d = 2and3only

21 ammonium chloride reacts with solution x to produce alkaline gas y. the equation is shown.
ammonium chloride + solution x — alkaline gas y

which row identifies x and y?

ee ee ee ee
a hydrochloric acid ammonia
b hydrochloric acid chlorine
cc sodium hydroxide ammonia
d sodium hydroxide chlorine

22 the solubility of some salts is shown.
[enone [nate [saat carbonate |
barium soluble soluble insoluble insoluble
lead(ii) insoluble soluble insoluble insoluble
potassium soluble soluble soluble soluble
zinc soluble soluble soluble insoluble
which two aqueous solutions produce an insoluble salt when mixed together?
a barium chloride and zinc nitrate
b _ barium nitrate and lead(ii) nitrate
c_lead(ii) nitrate and potassium carbonate
d potassium nitrate and zinc sulfate

23 the table shows some properties of the halogens.
°c room temperature | room temperature
chlorine —101 yellow-green gas
bromine —7 red-brown liquid
iodine 114 grey-black solid

astatine

which statement describes astatine?

a _itis a yellow gas at room temperature.

b itis a black liquid at room temperature.

c its melting point is higher than the melting point of bromine but lower than that of chlorine.

d its melting point is higher than the melting point of both iodine and bromine.

24 j, land m are elements in the periodic table.
e jhas the highest density.
e lhas the highest reactivity with water.
e mhas the highest atomic number.
which row identifies the elements j, l and m?
po
a copper lithium bromine
b lithium copper bromine
cc bromine lithium copper
d copper bromine lithium

25 which statement about elements in group | of the periodic table is correct?
a_ rubidium has a greater density than caesium.
b lithium has a higher melting point than potassium.
c_ potassium is more reactive than rubidium.
d_ rubidium atoms have more outer shell electrons than sodium atoms.

26 which diagram shows a mixture of noble gases?
a b c d
@ ee o
gig & o fe)
os’ *e o

27 which statements about the alloy brass are correct?
1 itis harder than pure copper.
2 it does not conduct electricity.
3 itis a mixture of copper and nickel.
4 it is stronger than pure copper.
a iand2 b 1and4 c 2and3 d 3and4

28 the bodies of aircraft are often made using aluminium.
which two properties of aluminium make it suitable for this use?
| |property! |property? |
a good conductor of electricity good conductor of heat
b good conductor of electricity strong
cc good conductor of heat low density
d strong low density

29 four metals, p, q, r and s, are added separately to water and to dilute hydrochloric acid.
the table shows the results.
| ae oe
with water hydrochloric acid

p no reaction fizzes slowly

q fizzes rapidly fizzes rapidly

r no reaction no reaction

$ fizzes slowly fizzes rapidly
which conclusion can be made from these observations?
a pis the least reactive of the four metals.
b  qis more reactive than s.
c_ qis less reactive than p.
d_ ris the most reactive of the four metals.

30 iron is extracted from its ore in the blast furnace.
which statement about one of the reactions in the blast furnace is correct?
a carbon monoxide is reduced to carbon dioxide.
b _lron(iii) oxide is reduced by carbon dioxide.
c_ slag is produced when calcium carbonate reacts with carbon dioxide.
d_ the reaction that heats the blast furnace produces carbon dioxide.

31. which pollutants found in river water lead to deoxygenation?
1 nitrates
2 harmful microbes
3 metal compounds
4 phosphates
a iand2 b 1and4 c 2and3 d 3and4

32 three effects of air pollutants are listed.
1 photochemical smog
2 respiratory problems
3 acid rain
which effects are caused by oxides of nitrogen?
a 1,2and3 b 1tand3only c_ 1only d 2and 3 only

33 fractional distillation is used to separate petroleum into its fractions.
which statement about the fractional distillation of petroleum is correct?
a_ the kerosene fraction is used as a fuel for ships.
b_ the fractions with the highest boiling points are extracted from the top of the fractionating
column.
c_ the naphtha fraction contains larger hydrocarbon molecules than the lubricating oil fraction.
d_ the refinery gas fraction contains hydrocarbon molecules which consist of five atoms.

34 fertilisers are mixtures of different compounds used to increase the growth of crops.
which pair of substances contain the three essential elements for plant growth?
a ammonium nitrate and calcium phosphate
b ammonium nitrate and potassium chloride
c ammonium phosphate and potassium chloride
d potassium nitrate and calcium carbonate

35 which row gives the relative molecular mass, m,, of the first member of the named homologous
series?
[| eneiogess snes [mh _
a alkanes 12
b alkenes 14
cc alcohols 32
d carboxylic acids 60

36 a hydrocarbon decolourises bromine water.
which statement about the hydrocarbon is correct?
a litis an alkane.
b its molecular formula is c2hg.
c_itis a saturated hydrocarbon.
d_ithas the general formula c,ho2n.

37 which statement describes how ethanol is manufactured from ethene?
a _ steam is added to ethene using an acid catalyst at 30°c.
b_ steam is added to ethene using an acid catalyst at 300°c.
c_ ethene is fermented using yeast at 30°c.
d_ ethene is fermented using yeast at 300 °c.

38 ethanoic acid reacts with aqueous sodium carbonate.
which gas is given off in this reaction?
a_ hydrogen
b_ carbon dioxide
c carbon monoxide
doxygen

39 a mixture containing an aqueous salt, sand and hot water is stirred.
the mixture is then poured into the apparatus shown.
ie
what is x?
a afiltrate only
b_aresidue only
c_ asolute only
d_ asolvent only

Solve 0620_w24_qp_13