Data Sources suitable for
use in the National 5
Chemistry Assignment.
Look at each of the sources and decide which you want to use in your
report. You do not need to use them all.
Make sure you select sources that are reliable, relevant or give
different perspectives.
1
http://www.creativechemistry.org.uk/gcse/documents/Module7/Nm07-24.pdf
Scientific education website
This website is written and maintained by Nigel Saunders
“I have written over twenty science books for teenagers,
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and a series of four books about Energy Resources. I have also
contributed to text books for Key Stage 3 science, and GCSE
and A Level Chemistry.”
Alcohol
Formula
Carbon
Atoms
Energy Released
(kJ/g*)
Methanol
Ethanol
Propanol
Butanol
Pentanol
Hexanol
Heptanol
Octanol
CH3OH
C2H5OH
C3H7OH
C4H9OH
C5H11OH
C6H13OH
C7H15OH
C8H17OH
1
2
3
4
5
6
7
8
22.7
29.7
33.6
36.1
37.7
39.0
39.9
40.6
2
Extract from SQA Chemistry data book for higher and advanced higher. Published Jan 2008.
The SQA is the national body in Scotland responsible for the development and certification of
qualifications used in schools and colleges.
http://www.sqa.org.uk/files_ccc/NQChemistryDataBooklet_H_AdvH.pdf
3
Data Source - Outcome 1
Title
Combustion of Alcohols
Aim
To find out if there is a relationship between the number of
carbon atoms in an alcohol and the energy released when 1
gram of the fuel is burned
Class Results
Alcohol
Experiment
Number of carbon atoms
Initial mass of burner (g)
Final mass of burner (g)
Change in mass of burner (g)
Methanol
Ethanol
Propanol
1
2
1
2
1
2
1
1
2
2
3
3
166.79 166.25 176.45 175.92 166.90 166.54
166.25 165.80 175.92 175.52 166.54 166.20
0.54
24
35
0.45
27
37
0.53
25
38
0.40
27
37
0.36
29
40
0.34
27
37
11
10
13
10
11
10
Energy released by alcohol, kJ
4.60
4.18
5.43
4.18
4.60
4.18
Energy released per gram of
alcohol, kJ
8.52
9.29
10.25
10.45
12.78
12.29
Initial temperature of water (oC)
Final temperature of water(oC)
Change in temperature(oC)
4