Overall Score: 19/24
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Criteria A: Research Design
5/6
0
3
6
Criteria Strands
Excellent
Research question context
Good
Methodological considerations
Moderate
Methodology description
Criteria Feedback
- Clear and specific real-world context linking caffeine extraction to green chemistry and environmental concerns
- Comprehensive variables table with clear rationale
- Justified choice of liquid–liquid extraction over HPLC and SFE
- Inclusion of preliminary trials to refine solvent selection
- Lacks quantitative justification for chosen coffee mass and water volume
- Procedure description contains numbering errors and omits exact temperatures and drying times
- Hypothesis phrasing is inconsistent with the table of solvents
Criteria B: Data Analysis
4/6
0
3
6
Criteria Strands
Good
Communication of data recording and processing
Moderate
Consideration of uncertainties
Moderate
Data processing quality
Criteria Feedback
- Data presented in well-organised tables with units, uncertainties and significant figures
- Processed data include averages, standard deviations and a bar chart with error bars
- Communication of results is clear and mostly precise
- Inconsistent use of significant figures in raw data
- Uncertainty propagation has omissions and does not follow root-sum-square methodology
- Minor inaccuracies in calculated efficiencies and chart labeling
Criteria C: Conclusion
5/6
0
3
6
Criteria Strands
Excellent
Conclusion relevance and support
Moderate
Scientific context comparison
Criteria Feedback
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- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Criteria D: Evaluation
5/6
0
3
6
Criteria Strands
Good
Methodological weaknesses
Good
Suggested improvements
Criteria Feedback
- Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
- Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.