
IB Chemistry IA Student Guide | Scientific Investigation | SL & HL | Criteria Support
Give students a clear, practical route through the IB Chemistry Internal Assessment / Scientific Investigation with this student-friendly guide.
The Chemistry IA is assessed using four equally weighted criteria: Research Design, Data Analysis, Conclusion and Evaluation, each worth 6 marks, giving a total of 24 marks. This resource translates those assessment expectations into straightforward guidance that students can actually use while planning, writing and improving their investigation.
Rather than simply reproducing the rubric, the guide explains what stronger performance looks like in practice and helps students understand the difference between stating, describing, explaining and justifying.
Students are supported with developing a focused research question, identifying variables, establishing relevant chemical theory, designing a reproducible methodology, collecting sufficient quantitative data, considering safety and environmental factors, presenting and processing results accurately, handling uncertainty, constructing a justified conclusion and evaluating limitations with realistic improvements.
The guide also covers the practical requirements of the scientific investigation, including the 3,000-word maximum, report expectations and academic integrity.
Ideal for introducing the IA, independent student reference, draft support, teacher-student conferences and final submission checks.
A useful companion for students who understand Chemistry but struggle to interpret assessment language or know exactly what high-quality IA work should contain.
Format: Editable Microsoft Word document
Suitable for: IB Chemistry SL & HL
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