Chemistry IA Exemplar: What is the minimum mass (g) of 90% calcium… | RevisionDojo

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IB Chemistry HL Internal Assessment Example

What is the minimum mass (g) of 90% calcium oxide (CaO) powder required to raise the temperature of 10.0 ml of distilled water from 26.0°C to 90.0°C in a polystyrene-insulated self-heating hotpot, and how does varying CaO mass affect peak temperature and heat energy released over a 15.00 minute reaction period, as measured by calorimetry?HL

Overall Score

20/24

Criteria A: Research Design

5/6

Criteria Strands

A.1Research question context

Excellent

A.2Methodological considerations

Good

A.3Methodology description

Moderate

Criteria Feedback

You placed the investigation in a clear, specific real-world chemistry context with a focused practical aim.
You included relevant planning features such as repeats, a preliminary investigation, controlled variables, and safety considerations.
Your method is detailed enough that another student could follow the overall experimental setup with only minor clarification needed.

The question and method are not fully aligned because the dependent variable is not consistently handled across the investigation.
The scaled-down model system is not fully justified in relation to the commercial hotpot context.
A few procedural details are ambiguous, so complete reproduction is not yet guaranteed.

Criteria B: Data Analysis

5/6

Criteria Strands

B.1Communication of data recording and processing

Moderate

B.2Consideration of uncertainties

Moderate

B.3Data processing quality

Poor

Criteria Feedback

You communicate the processing clearly through tables, graphs, labels, and summary statistics.
You include some meaningful treatment of uncertainty through repeats, standard deviations, and error bars.
Your work shows an attempt to use statistical and graphical tools to interpret the pattern in the data.

The processed data contain label inconsistencies that weaken clarity and precision.
The uncertainty treatment has calculation and consistency errors, especially in how measurement uncertainty is handled.
The statistical analysis does not properly match the independent observations needed to test the stated claim.

Criteria C: Conclusion

6/6

Criteria Strands

C.1Conclusion relevance and support

Moderate

C.2Scientific context comparison

Moderate

Criteria Feedback

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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.

Criteria D: Evaluation

4/6

Criteria Strands

D.1Methodological weaknesses

Good

D.2Suggested improvements

Excellent

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.

Loading scores...

Overall Score

20/24

Criteria A: Research Design

5/6

Criteria Strands

A.1Research question context

Excellent

A.2Methodological considerations

Good

A.3Methodology description

Moderate

Criteria Feedback

You placed the investigation in a clear, specific real-world chemistry context with a focused practical aim.
You included relevant planning features such as repeats, a preliminary investigation, controlled variables, and safety considerations.
Your method is detailed enough that another student could follow the overall experimental setup with only minor clarification needed.

The question and method are not fully aligned because the dependent variable is not consistently handled across the investigation.
The scaled-down model system is not fully justified in relation to the commercial hotpot context.
A few procedural details are ambiguous, so complete reproduction is not yet guaranteed.

Criteria B: Data Analysis

5/6

Criteria Strands

B.1Communication of data recording and processing

Moderate

B.2Consideration of uncertainties

Moderate

B.3Data processing quality

Poor

Criteria Feedback

You communicate the processing clearly through tables, graphs, labels, and summary statistics.
You include some meaningful treatment of uncertainty through repeats, standard deviations, and error bars.
Your work shows an attempt to use statistical and graphical tools to interpret the pattern in the data.

The processed data contain label inconsistencies that weaken clarity and precision.
The uncertainty treatment has calculation and consistency errors, especially in how measurement uncertainty is handled.
The statistical analysis does not properly match the independent observations needed to test the stated claim.

Criteria C: Conclusion

6/6

Criteria Strands

C.1Conclusion relevance and support

Moderate

C.2Scientific context comparison

Moderate

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.

Criteria D: Evaluation

4/6

Criteria Strands

D.1Methodological weaknesses

Good

D.2Suggested improvements

Excellent

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.