The student provides a focused and detailed description of the main topic, clearly stating and explaining the topic at the beginning of the investigation and in the body of the Introduction. The student also provides a focused and detailed description of the research question. 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 and easily understand it without the need of rereading. The methodology of the investigation is highly appropriate to the topic, using the measurement of mass loss over time to calculate the rate of calcium carbonate decomposition with different concentrations of sulfuric acid. The methodology is focused on answering the research question and includes appropriate steps to assure the relevancy and validity of the obtained results. The student also shows full awareness of safety hazards, ethical concerns, and environmental issues that can arise during the experiment.
