Clevedon School
Science Department
Year 11 Mock Exam Additional H (v1) Name_____________________ Teachers__________________
B3/25 C4/25 P3/25 Total/75 Grade
2 EQUATIONS energy = mass × specific heat capacity × temperature change energy = mass × specific latent heat efficiency =
useful energy output (× 100%) total energy input
wave speed = frequency × wavelength power = voltage × current energy supplied = power × time average speed =
distance time
distance = average speed × time s=
acceleration =
(u + v) ×t 2 change in speed time taken
force = mass × acceleration weight = mass × gravitational field strength work done = force × distance power =
work done time
power = force × speed KE =
1 2 mv 2
momentum = mass × velocity force =
change in momentum time
GPE = mgh mgh =
1 2 mv 2
resistance = © OCR 2013
voltage current
Š OCR 2013
The Periodic Table of the Elements 1
2
3
Key 7 Li
9 Be
lithium
3 23 Na
4
5
6
7
0
1 H
4 He
hydrogen
helium
1
2 11 B
12 C
14 N
16 O
19 F
20 Ne
beryllium
name
boron
carbon
nitrogen
oxygen
fluorine
neon
4
atomic (proton) number
5
6
7
8
9
10
24 Mg
27 Al
28 Si
31 P
32 S
35.5 Cl
40 Ar
sodium
magnesium
aluminium
silicon
phosphorus
sulfur
chlorine
argon
11
12
13
14
15
16
17
18
39 K
40 Ca
45 Sc
48 Ti
51 V
52 Cr
55 Mn
56 Fe
59 Co
59 Ni
63.5 Cu
65 Zn
70 Ga
73 Ge
75 As
79 Se
80 Br
84 Kr
potassium
calcium
scandium
titanium
vanadium
chromium
manganese
iron
cobalt
nickel
copper
zinc
gallium
germanium
arsenic
selenium
bromine
krypton
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
85 Rb
88 Sr
89 Y
91 Zr
93 Nb
96 Mo
[98] Tc
101 Ru
103 Rh
106 Pd
108 Ag
112 Cd
115 In
119 Sn
122 Sb
128 Te
127 I
131 Xe
rubidium
strontium
yttrium
zirconium
niobium
molybdenum
technetium
ruthenium
rhodium
palladium
silver
cadmium
indium
tin
antimony
tellurium
iodine
xenon
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
133 Cs
137 Ba
139 La*
178 Hf
181 Ta
184 W
186 Re
190 Os
192 Ir
195 Pt
197 Au
201 Hg
204 Tl
207 Pb
209 Bi
[209] Po
[210] At
[222] Rn
caesium
barium
lanthanum
hafnium
tantalum
tungsten
rhenium
osmium
iridium
platinum
gold
mercury
thallium
lead
bismuth
polonium
astatine
radon
55
56
57
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
[223] Fr
[226] Ra
[227] Ac*
[261] Rf
[262] Db
[266] Sg
[264] Bh
[277] Hs
[268] Mt
[271] Ds
[272] Rg
francium
radium
actinium
rutherfordium
dubnium
seaborgium
bohrium
hassium
meitnerium
darmstadtium
roentgenium
89
104
109
110
111
87
88
105
106
107
108
Elements with atomic numbers 112-116 have been reported but not fully authenticated
* The lanthanoids (atomic numbers 58-71) and the actinoids (atomic numbers 90-103) have been omitted. The relative atomic masses of copper and chlorine have not been rounded to the nearest whole number.
28
relative atomic mass atomic symbol
3 Answer all the questions. SECTION A – Module B3 1
Look at the picture of chromosomes.
(a) Polar bears have 74 chromosomes in their white blood cells. What is the haploid number for a polar bear? .............................................................................................................................................. [1] (b) Chromosomes are made from a chemical called DNA. Describe the structure of DNA. You may draw a labelled diagram.
................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] (c) Collagen and insulin are two different proteins. The production of these proteins is controlled by two different genes. Describe how these two genes are similar and how they are different. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [3] [Total: 6] Š OCR 2013
Turn over
4 2
Soya beans are grown as food.
(a) Soya bean plants can be genetically modified to be resistant to herbicides. Complete the flow chart to show the process.
Scientists use nuclei from a plant already resistant to herbicides.
The genetically modified plant is cloned. [2] (b) Some people object to growing genetically modified soya bean plants. This is because they think the soya beans could be harmful when eaten. Write about other reasons why people may object. ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 4]
Š OCR 2013
5 3
Jenny and Fred investigate plant growth using two identical plants. They put plant A in a warm room and plant B in a cold room. Both plants get the same amount of light, needed for photosynthesis and growth. They use a ruler to measure the height of each plant once a week. Look at their results.
Time in weeks
Height in cm Plant A warm room (20 °C)
Plant B cold room (10 °C)
0
4.5
4.5
1
5.3
4.8
2
5.8
5.2
3
6.2
5.7
4
6.9
6.0
5
7.4
6.3
(a) The percentage increase for plant A after 5 weeks is 64.4%. Calculate the percentage increase in growth for plant B after 5 weeks.
answer ..................................................... % [2] (b) Explain the differences in the growth. Use ideas about enzymes in your answer. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [3] [Total: 5]
© OCR 2013
Turn over
6 4
Peter is investigating how exercise affects his pulse rate. He uses a pulse meter to measure his pulse rate. He runs as fast as he can for four minutes. Peter’s legs ache towards the end of the exercise. He then sits down and measures his pulse rate again every two minutes for the next 16 minutes. The graph shows his results. 200 180 160 140 pulse rate in beats per minute
120 100 80 60
running
40 20 0
0
2
4
6
8
10
time in minutes
Š OCR 2013
12
14
16
18
20
7 (a) Explain the pattern in the graph between 4 minutes and 20 minutes. The quality of written communication will be assessed in your answer to this question. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [6]
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Turn over for the remainder of question 4
8 (b) Peter then compares his recovery time after exercising for different lengths of time. He does this by repeating his experiment but changing how long he exercises. Look at his results. Length of exercise in minutes
Recovery time in minutes
4
10
6
12
8
14
10
14
Predict his recovery time after 12 minutes of exercise. Use your understanding of science to justify your answer. ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] (c) Peter finds out about blood circulation. Humans have a double circulatory system. Fish have a single circulatory system. Explain the disadvantages of a single circulatory system. ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 10]
Š OCR 2013
10 SECTION B – Module C4 4
This question is about atomic structure. (a) An atom of chlorine can be represented as: 35 17
Cl
Complete the following sentence. This atom of chlorine contains ............. protons, 17 electrons and ............. neutrons.
[2]
(b) Complete the table about the particles found in atoms. Particle
Relative electric charge
Relative mass
Electron
........................
0.0005
Neutron
........................
1
Proton
+1
........................ [2] [Total: 4]
Š OCR 2013
11 5
This question is about structure and bonding. (a) Calcium chloride contains calcium ions, Ca2+, and chloride ions, Cl –. Write down the formula for calcium chloride. .............................................................................................................................................. [1] (b) Sodium oxide, Na2O, is an ionic compound. Sodium has the electronic structure 2.8.1. Oxygen has the electronic structure 2.6. Use ‘dot and cross’ diagrams to draw the electronic structures of the two ions in Na2O. Include the charges on the ions.
[2] (c) Sodium oxide has a high melting point and does not conduct electricity as a solid. Use ideas about structure and bonding to explain why. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 5] © OCR 2013
Turn over
12 6
Annie is concerned that the river near her house may be polluted.
She tests a sample of water from the river. She tests the water with silver nitrate solution and also with barium chloride solution. Look at her results.
Water sample
With silver nitrate solution
With barium chloride solution
yellow precipitate
white precipitate
(a) Annie thinks that the water contains both bromide ions and sulfate ions. Is she correct? Explain your answer. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] (b) Barium chloride, BaCl 2, reacts with sodium sulfate, Na2SO4. Barium sulfate, BaSO4, and sodium chloride, NaCl , are made. Write a balanced symbol equation for this reaction.
.............................................................................................................................................. [2] [Total: 4]
Š OCR 2013
13 7
This question is about Group 7 elements. Look at the table. It shows some information about the Group 7 elements. Element
Molecular formula
Physical appearance
Melting point in °C
Boiling point in °C
fluorine
F2
pale yellow gas
.......................
–188
chlorine
Cl 2
pale green gas
–101
–35
bromine
Br2
orange liquid
–7
59
iodine
I2
.......................
114
184
(a) Complete the table to show the physical appearance of iodine.
[1]
(b) Use ideas about trends in a group to predict the melting point of fluorine.
[1]
(c) Sodium, in Group 1, reacts with bromine. Write a word equation for this reaction. .............................................................................................................................................. [1] [Total: 3]
© OCR 2013
Turn over
14 8
This question is about metals. (a) Look at the table. It gives information about five metals. Metal
Melting point in °C
Relative electrical conductivity (1 = low, 70 = high)
Relative heat conductivity (1 = low, 250 = high)
Density in g / cm3
Cost of one kg in £
A
660
40
118
2.7
1.3
B
1083
64
223
8.9
4.7
C
1535
11
42
7.9
0.3
D
962
67
235
10.5
602.8
E
420
18
67
7.1
1.2
overhead power cable
Suggest which metal would be best for making overhead power cables. Choose from A, B, C, D or E. Metal ...................................... Explain your answer. Use information from the table to help you. ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] (b) Some metals can be used as superconductors. Superconductors conduct electricity with little or no electrical resistance. Write about one disadvantage of superconductors. ................................................................................................................................................... .............................................................................................................................................. [1] [Total: 3] © OCR 2013
15 9
Look at the table. It shows part of an early version of the Periodic Table of the Elements. The numbers are the relative atomic masses of the elements. H 1
Li 7
Be 9
B 11
C 12
N 14
O 16
F 19
Na 23
Mg 24
Al 27
Si 28
P 31
S 32
Cl 35.5
K 39
Three chemists helped with the development of the Periodic Table. One was Dobereiner, who noticed triads such as Li, Na and K. The other two chemists were: • •
Newlands Mendeleev.
Write about the evidence that Newlands and Mendeleev used to develop the Periodic Table. The quality of written communication will be assessed in your answer to this question. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... ..................................................................................................................................................... [6] [Total: 6]
© OCR 2013
Turn over
16 SECTION C – Module P3 8
Ravi drives his car on a straight road. Look at the distance-time graph for his car journey. There are four sections shown on the graph, A, B, C and D.
3.0 2.5 distance from starting 2.0 position in km 1.5 1.0
A
B
C
D
0.5 0
0
1
2
3
4
5
6
7
8
9
10
11
time in minutes (a) Which two sections show the car either accelerating or decelerating? Choose from A, B, C or D. answer ......................................................... and ........................................................ [1] (b) Calculate the car’s speed in m/s for section A of the journey. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... speed ................................................. m/s [3]
© OCR 2013
17 (c) Ravi sets off on another journey. His friend Lewis follows Ravi’s car as shown in the diagram.
(i)
velocity = 10 m/s
velocity = 15 m/s
Lewis
Ravi
What is the relative velocity of the two cars? Choose from 0.7
1.5
5
12.5
25
answer ................................................. m/s [1] (ii)
Explain your answer to (i). ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ...................................................................................................................................... [2] [Total: 7]
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Turn over
18 9
(a) Airbags are useful if a car is involved in a crash. driver
The table shows some information about a crash test carried out by a car manufacturer. Initial speed of driver in metres per second
Mass of driver in kilograms
Time to stop driver’s forward motion in seconds
Without airbags
15
50
0.02
With airbags
15
50
0.05
Use the information in the table to describe and explain how airbags help to protect the driver in a crash. Use relevant calculations in your answer. The quality of written communication will be assessed in your answer to this question. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [6]
Š OCR 2013
19 (b) Seatbelts are another car safety feature that can be useful in a crash. When seatbelts were first fitted to cars, not everyone thought that they were a good idea. However, there was scientific evidence which showed the benefit of wearing seatbelts. Suggest how governments have made society aware of the scientific evidence and encouraged the wearing of seatbelts. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 8]
Š OCR 2013
Turn over
20 10 Miranda is shopping. She travels up an escalator.
length of escalator = 9.7 m
weight of Miranda = 500 N
vertical distance = 7.8 m
weight of her shopping = 50 N
(a) Miranda carries her shopping from the bottom of the escalator to the top. It takes 8 seconds. Calculate the extra power that the escalator motor must provide when Miranda and her shopping travel from the bottom to the top of the escalator. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... answer .................................................... W [3] (b) What would happen to the value of the extra power calculated in (a), if the escalator took 16 seconds to take Miranda and her shopping up to the top of the escalator? answer ...................................................................................................................................... explanation ............................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 5] Š OCR 2013
21 11 Tanya and Sarah both test drive a car. They drive the same car on roads in town and on the motorway. Look at the table. Driver
Fuel consumption driving in town in km per litre
Fuel consumption for motorway driving in km per litre
CO2 emissions for total journey in grams per km
Tanya
18
21
128
Sarah
16
18
138
(a) Use the data to suggest and explain why the two drivers obtain different fuel consumptions and CO2 emissions for their test drives. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [3] (b) Tanya drives along a road. She applies the brakes to stop the car. The next day she drives along the same road and again brakes to stop the car. Look at the data in the table. Speed in m/s
Thinking distance in metres
Braking distance in metres
Day 1
18
12
24
Day 2
18
15
30
Explain what could have produced the differences in the figures for these two days. (i)
Difference in thinking distance: ...................................................................................................................................... [1]
(ii)
Difference in braking distance: ...................................................................................................................................... [1] [Total: 5] END OF QUESTION PAPER
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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