his question is about fuels and energy. box
Figure 1 shows the percentage of electricity generated in the UK between
2007 and 2017 using:
• oil
• solar energy.
Figure 1
0 1 . 1 Describe the changes in the percentag
...
his question is about fuels and energy. box
Figure 1 shows the percentage of electricity generated in the UK between
2007 and 2017 using:
• oil
• solar energy.
Figure 1
0 1 . 1 Describe the changes in the percentage of electricity generated in the UK between
2007 and 2017 using:
• oil
• solar energy.
Use data from Figure 1 in your answer.
[3 marks]4
*04* IB/M/Jun21/8462/2H
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outside the
0 1 . 2 Oil contains carbon and some sulfur. box
When oil is burned, the products of combustion may be released into the atmosphere.
Explain the environmental effects of releasing these products of combustion into
the atmosphere.
[6 marks]5
*05*
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12
0 1 . 3 Suggest one reason why using solar energy is a more sustainable way of generating
electricity than burning oil.
[1 mark]
0 1 . 4 Solar energy may not be able to replace the generation of electricity from
fossil fuels completely.
Suggest two reasons why.
[2 marks]
1 2
Turn over for the next question6
*06* IB/M/Jun21/8462/2H
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0 2 This question is about alkanes. box
Table 1 shows information about some alkanes.
Table 1
Number of carbon atoms
in alkane molecule
Boiling point of alkane
in °C
4 0
5 36
6 69
7 X
8 126
9 151
0 2 . 1 Plot the data from Table 1 on Figure 2.
[2 marks]
Figure 27
*07*
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0 2 . 2 Predict the boiling point X of the alkane with seven carbon atoms in a molecule. box
Use Table 1 and Figure 2.
[1 mark]
X = °C
0 2 . 3 Figure 2 is not suitable to show the boiling point of the alkane with three carbon
atoms in a molecule.
Suggest one reason why.
[1 mark]
0 2 . 4 What is the state at 20 °C of the alkane with four carbon atoms in a molecule?
Use Table 1.
[1 mark]
Question 2 continues on the next page8
*08* IB/M/Jun21/8462/2H
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8
Table 1 is repeated below.
Table 1
Number of carbon atoms
in alkane molecule
Boiling point of alkane
in °C
4 0
5 36
6 69
7 X
8 126
9 151
The alkane with nine carbon atoms in a molecule is called nonane.
0 2 . 5 Complete the formula of nonane.
[1 mark]
C9H
___
0 2 . 6 Nonane will condense lower in a fractionating column during fractional distillation
than the other alkanes in Table 1.
Explain why.
You should refer to the temperature gradient in the fractionating column
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