The student provides a focused and detailed description of the main topic and explains the chemistry well enough for the reader to fully and easily understand it without the need of rereading. The methodology of the investigation is highly appropriate to the topic, but it lacks detail and might seem confusing. The student only includes one controlled variable, which isn't controlled, and no awareness of uncontrolled variables and discussion of how they might influence the results of the investigation present. The student shows full awareness of safety hazards that can arise during the experiment, but no ethical or environmental considerations were mentioned.