Comment: The choice of topic is well justified, as the student explains the application of the metal ion complex chemicals in the dye industry, as well as their personal interest in the use of dyes

Comment: The choice of topic is well justified, as the student explains the application of the metal ion complex chemicals in the dye industry, as well as their personal interest in the use of dyes

Comment: The student provides a list of assumptions, an in-depth explanation of the hypothesis, and a description of the results of the preliminary trial, displaying strong and consistent initiative in designing the investigation. Additionally, they provide photos of their experimental setup, showing personal input in conducting the study

Comment: The student provides a list of assumptions, an in-depth explanation of the hypothesis, and a description of the results of the preliminary trial, displaying strong and consistent initiative in designing the investigation. Additionally, they provide photos of their experimental setup, showing personal input in conducting the study

Comment: The student provides a list of assumptions, an in-depth explanation of the hypothesis, and a description of the results of the preliminary trial, displaying strong and consistent initiative in designing the investigation. Additionally, they provide photos of their experimental setup, showing personal input in conducting the study

Comment: The student provides a list of assumptions, an in-depth explanation of the hypothesis, and a description of the results of the preliminary trial, displaying strong and consistent initiative in designing the investigation. Additionally, they provide photos of their experimental setup, showing personal input in conducting the study

Comment: The student clearly states and explains the topic both at the beginning of the work and in the body of the Introduction - an investigation into the effect of increasing ionic radii of central metal ions on the energy difference in the d-orbital splitting of color complexes

Comment: The student clearly states and explains the topic both at the beginning of the work and in the body of the Introduction - an investigation into the effect of increasing ionic radii of central metal ions on the energy difference in the d-orbital splitting of color complexes

Comment: The background of the experiment provides a good explanation of the key concepts necessary for understanding the investigation - properties of color complexes and the emergence of color, role of ammonium hydroxide, formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. Each description of a process or a concept is backed by a detailed explanation, supported by literature references. The section is well-organized into paragraphs that make understanding the concepts easier

Comment: The background of the experiment provides a good explanation of the key concepts necessary for understanding the investigation - properties of color complexes and the emergence of color, role of ammonium hydroxide, formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. Each description of a process or a concept is backed by a detailed explanation, supported by literature references. The section is well-organized into paragraphs that make understanding the concepts easier

Comment: The background of the experiment provides a good explanation of the key concepts necessary for understanding the investigation - properties of color complexes and the emergence of color, role of ammonium hydroxide, formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. Each description of a process or a concept is backed by a detailed explanation, supported by literature references. The section is well-organized into paragraphs that make understanding the concepts easier

Comment: The chemistry of the experiment is very clearly explained, encompassing properties of color complexes and the emergence of color, the role of ammonium hydroxide, the formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. The student includes chemical reactions and a diagram that helps the reader understand the exact processes happening

Comment: The chemistry of the experiment is very clearly explained, encompassing properties of color complexes and the emergence of color, the role of ammonium hydroxide, the formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. The student includes chemical reactions and a diagram that helps the reader understand the exact processes happening

Comment: The chemistry of the experiment is very clearly explained, encompassing properties of color complexes and the emergence of color, the role of ammonium hydroxide, the formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. The student includes chemical reactions and a diagram that helps the reader understand the exact processes happening

Comment: The chemistry of the experiment is very clearly explained, encompassing properties of color complexes and the emergence of color, the role of ammonium hydroxide, the formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. The student includes chemical reactions and a diagram that helps the reader understand the exact processes happening

Comment: The student correctly identified the independent (ionic radii of the metal ion) and dependent (wavelength of the complexes at the highest absorbance) variables to answer the research question

Comment: The student correctly identified the independent (ionic radii of the metal ion) and dependent (wavelength of the complexes at the highest absorbance) variables to answer the research question

Comment: The student correctly lists the variables that have to be controlled or maintained constant for the results to be valid (oxidation state of the ions, period of the metals, volume and concentration of the used solutions, etc.) and the methods of controlling them, as well as their significance and potential impact on the results of the experiment

Comment: The student correctly lists the variables that have to be controlled or maintained constant for the results to be valid (oxidation state of the ions, period of the metals, volume and concentration of the used solutions, etc.) and the methods of controlling them, as well as their significance and potential impact on the results of the experiment

Comment: The chemistry of the experiment is very clearly explained, encompassing properties of color complexes and the emergence of color, the role of ammonium hydroxide, the formation of the complexes, and the rationale behind using a spectrophotometer to measure the energy of d-orbital splitting. The student includes chemical reactions and a diagram that helps the reader understand the exact processes happening