The student partially meets the criterion for a focused and detailed description of the main topic, as the topic is implied but not directly stated. However, they fully meet the criterion for a focused and detailed description of the research question. The student provides relevant and focused background information, explaining the chemistry of the experiment clearly and comprehensively. The methodology of the investigation is highly appropriate to the topic, although there is a minor issue with the dependent variable not being fully explained. The student demonstrates awareness of safety, ethical, and environmental concerns that can arise during the experiment.