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