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Clevedon School

Science Department

Chemistry C1 Interim Test Foundation

Write all answers on lined paper. Do not write in this booklet


12 6

Energy is transferred during chemical reactions. Chemical energy can be transferred to: electrical energy heat light sound (a) Complete the sentences. Use words from the list. (i)

(ii)

When natural gas burns, most chemical energy is transferred to ................................................. .

[1]

In a car battery, chemical energy is transferred to ................................................. .

[1]

(b) Zoe and Olivia test three fuels. Look at the diagram. It shows the apparatus they use to measure the energy given out by the fuels. apparatus X

copper can

100 g water

spirit burner liquid fuel

(i)

What is the name of apparatus X? ...................................................................................................................................... [1]

Š OCR 2011


13 (ii)

Look at the table. It shows their results. fuel

temperature of water at start in °C

temperature of water at end in °C

mass of fuel burned in grams

meths

18

38

1.1

propanol

22

42

0.9

petrol

16

36

0.6

Which fuel gives out the most energy for each gram of fuel used? ........................................................................................................................................... Explain your answer. ........................................................................................................................................... ...................................................................................................................................... [3] [Total: 6]

© OCR 2011

Turn over


14 7

Look at the displayed formulas of some compounds.

H

H

H

C

C

H

H

H

H

ethane

H C

H C

H H

C

C

H

H

O

H

H

H

C

C

H

Cl n

H

propene (a) (i)

H

ethanol

H C

H

poly(chloroethene)

Write down the name of an alkane. Choose from the compounds above. ...................................................................................................................................... [1]

(ii)

Write down the name of an alkene. Choose from the compounds above. ...................................................................................................................................... [1]

(b) Look at the displayed formula of ethane. Ethane is a hydrocarbon. Write down the names of the two elements chemically combined in a hydrocarbon. ................................................................... and ................................................................... [1] (c) Poly(chloroethene) is a polymer. It is made by polymerisation. What are the conditions needed for polymerisation? ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 5] Š OCR 2011


15 8

This question is about fuels. (a) A gas from the air is needed when fuels burn. Write down the name of this gas. .............................................................................................................................................. [1] (b) Complete combustion needs lots of air. The complete combustion of a hydrocarbon fuel makes water and a gas. Write down the name of this gas. .............................................................................................................................................. [1] (c) Incomplete combustion makes carbon monoxide. Why is this a problem? .............................................................................................................................................. [1] (d) Propane is a hydrocarbon fuel.

H

H

H

H

C

C

C

H

H

H

H

propane (i)

How many carbon atoms are there in one molecule of propane? ...................................................................................................................................... [1]

(ii)

What is the total number of atoms in one molecule of propane? ...................................................................................................................................... [1] [Total: 5]

Š OCR 2011

Turn over


9. The air in our atmosphere contains oxygen (21%), nitrogen (78%), and carbon dioxide (0.035%) as well as water vapour and very small amounts of other gases. The levels of oxygen, nitrogen and carbon in the present day atmosphere stay roughly the same, although levels of oxygen and carbon dioxide can be changed by man’s activities. It is thought that the present day atmosphere evolved over millions of years. Describe the theory that has been proposed by scientists to explain how this happened and describe how man’s activities have begun to change the composition of the atmosphere. The quality of written communication will be assessed in your answer to this question. ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ………………………………………………………………………………………………… ……………………………………………………………………………………… [6 marks]


12 6

Crude oil contains a mixture of hydrocarbons. Look at the table. It gives information about some of these hydrocarbons. molecular formula

melting point in °C

boiling point in °C

propane

C3H8

–188

–42

butane

C4H10

–138

0

hexane

C6H14

–95

69

decane

C10H22

–30

174

hexadecane

C16H34

18

287

hydrocarbon

(a) Which hydrocarbon has a molecule with a total of 14 atoms? Choose from the table. .............................................................................................................................................. [1] (b) Larger hydrocarbon molecules contain more carbon atoms. How does melting point change as the molecules get larger? .............................................................................................................................................. [1] (c) Petrol has a boiling range from 40 °C to 110 °C. Which hydrocarbon is found in petrol? Choose from the table. .............................................................................................................................................. [1] [Total: 3]

© OCR 2012


Š OCR 2012

89

actinium

[227] Ac*

57

lanthanum

139 La*

39

yttrium

89 Y

21

scandium

45 Sc

name

104

rutherfordium

[261] Rf

72

hafnium

178 Hf

40

zirconium

91 Zr

22

titanium

48 Ti

105

106

seaborgium

[266] Sg

[262] Db

dubnium

74

tungsten

184 W

42

molybdenum

96 Mo

24

chromium

52 Cr

73

tantalum

181 Ta

41

niobium

93 Nb

23

vanadium

51 V

atomic (proton) number

relative atomic mass atomic symbol

Key

107

bohrium

[264] Bh

75

rhenium

186 Re

43

108

hassium

[277] Hs

76

osmium

190 Os

44

ruthenium

101 Ru

[98] Tc

technetium

26

iron

56 Fe

25

manganese

55 Mn cobalt

59 Co nickel

59 Ni copper

63.5 Cu zinc

65 Zn

boron

carbon

nitrogen

oxygen

16 O

6

fluorine

19 F

7

4 He

0

109

meitnerium

[268] Mt

77

iridium

192 Ir

45

rhodium

103 Rh

27

110

darmstadtium

[271] Ds

78

platinum

195 Pt

46

palladium

106 Pd

28

111

roentgenium

[272] Rg

79

gold

197 Au

47

silver

108 Ag

29

The relative atomic masses of copper and chlorine have not been rounded to the nearest whole number.

81

thallium

204 Tl

49

indium

115 In

31

gallium

tin

82

lead

207 Pb

50

119 Sn

32

germanium

73 Ge

14

silicon

28 Si

6

83

bismuth

209 Bi

51

antimony

122 Sb

33

arsenic

75 As

15

phosphorus

31 P

7

84

polonium

[209] Po

52

tellurium

128 Te

34

selenium

79 Se

16

sulfur

32 S

8

85

astatine

[210] At

53

iodine

127 I

35

bromine

80 Br

17

chlorine

35.5 Cl

9

86

radon

[222] Rn

54

xenon

131 Xe

36

krypton

84 Kr

18

argon

40 Ar

10

neon

Elements with atomic numbers 112-116 have been reported but not fully authenticated

80

mercury

201 Hg

48

cadmium

112 Cd

30

70 Ga

13

aluminium

27 Al

5

20 Ne

2 14 N

5

helium

12 C

4

1 11 B

3

hydrogen

1 H

* The lanthanoids (atomic numbers 58-71) and the actinoids (atomic numbers 90-103) have been omitted.

88

87

[226] Ra

[223] Fr

radium

56

francium

barium

137 Ba

133 Cs

55

38

caesium

strontium

88 Sr

85 Rb

37

20

rubidium

calcium

40 Ca

39 K

19

12

potassium

magnesium

24 Mg

23 Na

11

4

sodium

beryllium

3

9 Be

7 Li

lithium

2

1

The Periodic Table of the Elements

24

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