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Internet/literature source, Analysis and Conclusion
Candidate A
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 1 of 26
Analysis:
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
3 Data collection
and handling
(e) Data relevant to
the experiment
from an
internet/literature
source.
1
(f) A reference for the
source of the
internet/literature
data.
1
5 Analysis A valid
comparison of the experimental data with data from the internet/literature source.
1
1 A-type mark
6 Conclusion A valid conclusion
that relates to the aim and is supported by the data in the report.
1
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 2 of 26
Candidate B
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 3 of 26
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 4 of 26
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 5 of 26
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
3 Data collection
and handling
(e) Data relevant to
the experiment
from an
internet/literature
source.
1
(f) A reference for the
source of the
internet/literature
data.
1
5 Analysis A valid
comparison of the experimental data with data from the internet/literature source.
1
1 A-type mark
6 Conclusion A valid conclusion
that relates to the aim and is supported by the data in the report.
1
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 6 of 26
Candidate C
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 7 of 26
Internet/ literature source
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 8 of 26
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
3 Data collection
and handling
(e) Data relevant to
the experiment
from an
internet/literature
source.
1
(f) A reference for the
source of the
internet/literature
data.
1
5 Analysis A valid
comparison of the experimental data with data from the internet/literature source.
1
1 A-type mark
6 Conclusion A valid conclusion
that relates to the aim and is supported by the data in the report.
1
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 9 of 26
Candidate D
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 10 of 26
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
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National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 12 of 26
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 13 of 26
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
3 Data collection
and handling
(e) Data relevant to
the experiment
from an
internet/literature
source.
1
(f) A reference for the
source of the
internet/literature
data.
1
5 Analysis A valid
comparison of the experimental data with data from the internet/literature source.
1
1 A-type mark
6 Conclusion A valid conclusion
that relates to the aim and is supported by the data in the report.
1
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 14 of 26
Candidate E
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 15 of 26
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 16 of 26
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
3 Data collection
and handling
(e) Data relevant to
the experiment
from an
internet/literature
source.
1
(f) A reference for the
source of the
internet/literature
data.
1
5 Analysis A valid
comparison of the experimental data with data from the internet/literature source.
1
1 A-type mark
6 Conclusion A valid conclusion
that relates to the aim and is supported by the data in the report.
1
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 17 of 26
[Blank Page]
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 18 of 26
Evaluation
Candidate A
Aim- To find out which two chemicals give the greatest decrease in temperature for use in ice packs. We measured the temperature, added the chemicals and measured temperature again.
Name of chemicals Starting temperature End temperature
Ammonium nitrate + water+ carbolic acid
20.5 20.2
19.6 19.3
Citrus acid + sodium hydroxide + water
20.0 19.3
19.0 18.4
Urea + water 19.1 21.1
19.1 20.2
Barium hydroxide + water
20.2 19.9
18.5 18.1
Name of chemicals Average starting
temperature Average end temperature
Ammonium nitrate + water+ carbolic acid
20.35 19.45
Citrus acid + sodium hydroxide + water
19.65 18.7
Urea + water 21.5 20.5
Barium hydroxide + water
20.05 18.3
Name of chemicals Average temperature change
Ammonium nitrate + water+ carbolic acid
0.9
Citrus acid + sodium hydroxide + water
0.95
Urea + water 1.0
Barium hydroxide + water 1.75
Our results were quite accurate because we used an electric thermometer. We only tested four mixtures- we should do more different mixtures.
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 19 of 26
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
7 Evaluation
An evaluation of the experimental procedure. Factor Action /
evidence
2
1 A-type mark
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 20 of 26
Candidate B
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 21 of 26
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
7 Evaluation
An evaluation of the experimental procedure. Factor Action /
evidence
2
1 A-type mark
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 22 of 26
Candidate C
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 23 of 26
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
7 Evaluation
An evaluation of the experimental procedure. Factor Action /
evidence
2
1 A-type mark
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 24 of 26
Candidate D
Aim: To investigate the effect of fertilisers on the pH of soil I put fertilisers in a beaker with soil and water and measured PH before and after.
Name of
fertiliser PH of soil before adding fertiliser
PH of soil
(with added
fertiliser)
after Phostrogen plant food
5 6
Blood, fish
&bone
5 6
Slow release 5 6
Tomorite 5 7
Miracle grow 5 9
This experiment is accurate as I was the person who carried the experiment out therefore I know that the results are fair and right. The experiment was carried out in clean equipment which meant that the testing was fair and the same amount of soil (20g) and fertiliser (5 grams) was used every time meaning that the results would be clear. The results are good because I have concordant results except miracle grow that I would do again if I had time.
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
7 Evaluation
An evaluation of the experimental procedure. Factor Action /
evidence
2
1 A-type mark
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 25 of 26
Candidate E
Aim: To find out which type of bottled water contains the most calcium Method: Samples of different bottled waters were titrated with EDTA
Bottled water 1 2 3 4 5 6 7 8 Average titre / cm3
Deeside 1.8 2.4 1.5 2.9 2.0 1.1 3.1 2.0 2.0
Evian 7.2 6.5 7.1 7.15
Highland Spring 6.6 7.1 6.3 6.9 6.0 6.2 6.1
The colour kept changing almost straight away in these experiments so it was really difficult to stop soon enough so our results kept going up and down. It was really difficult to add such small volumes of EDTA. The experiment would be better if we had a better burette or we could use bigger water samples so you wouldn’t have to add such small amounts or we could use weaker EDTA solution.
Marks Grid
Skills & KU Max mark
Mark awarded
Comments
7 Evaluation
An evaluation of the experimental procedure. Factor Action /
evidence
2
1 A-type mark
National 5 Chemistry Assignment 2017 Workshop 2 - evidence
SQA | www.understandingstandards.org.uk 26 of 26