The student provides a focused and detailed description of the main topic, clearly stating and explaining the topic of the investigation. The research question is also incredibly detailed, allowing for precise determination of the variables and methodology. The background information provided is relevant and focused, explaining key concepts necessary for understanding the investigation. The chemistry is explained well enough for the reader to fully understand without the need for rereading. The methodology of the investigation is highly appropriate to the topic, using complexometric titration to find the concentration of calcium ions. The methodology is focused on answering the research question and includes appropriate steps to assure the relevancy and validity of the results. The student shows full awareness of safety hazards and environmental issues that can arise during the experiment. However, there is a lack of consideration for ethical concerns, which could have been addressed by stating that none were applicable or describing the considerate use of materials in the study.
