The student clearly stated the independent variable as the heating temperature of Mohr's salt in sulfuric acid and the dependent variable as the volume of potassium permanganate used in the titration, linking them effectively in the research question. The methodology was well-defined, detailing the steps of the procedure, the materials used, and the techniques for measuring both variables, ensuring that the investigation would be reproduced. The student also addressed controlled variables, safety, ethical, and environmental considerations, demonstrating a comprehensive understanding of the investigation's context. Overall, the methodology was presented clearly without irrelevant or repetitive information, allowing for easy comprehension.
