The student clearly articulated the independent and dependent variables in the research question, identifying the pH of beverages as the independent variable and the rate of calcium carbonate dissolution as the dependent variable. The methodology was thoroughly described, including the choice of techniques for measuring both variables, with specific details on how pH levels were assessed using a pH meter and how dissolution rates were quantified. The student demonstrated a comprehensive understanding of the relevant background theory, safety, ethical, and environmental considerations associated with the investigation. The methodology was detailed and organized, allowing for reproducibility, and it avoided irrelevant or repetitive information, ensuring clarity for the reader. Overall, the student's work reflected careful planning and a solid grasp of the experimental process.
