The student clearly stated the independent variable as the concentration of sodium thiosulfate and the dependent variable as the rate of reaction, as outlined in the research question. They described the method of analysis, indicating that the rate of response will be determined by measuring absorbance with a spectrophotometer. However, the background theory section lacked a clear connection to the research question and did not adequately describe relevant concepts such as reaction mechanisms. Additionally, the student did not provide a clear explanation of the techniques used for measuring the variables, which would be improved by specifying the equipment and methods employed. Despite these shortcomings, the student effectively discussed controlled variables, safety, and environmental issues, and presented a well-structured methodology that allowed for reproducibility.
