The student clearly stated the independent variable as the concentration of Copper(II) Nitrate solution and the dependent variable as the mass of copper deposited on the graphite cathode, providing a thorough explanation of the research question. The methodology was well-defined, detailing the experimental procedure, including the measurement of variables and the controlled conditions maintained throughout the investigation. The student effectively discussed the choice of sampling techniques, the number of trials, and the precision of measurements, demonstrating a systematic approach to the experimental design. Additionally, safety, ethical, and environmental considerations were appropriately addressed, showcasing awareness of responsible laboratory practices. Overall, the methodology was described in sufficient detail, allowing for reproducibility without the inclusion of irrelevant or repetitive information.
