This research paper aims to propose a novel didactic sequence inspired by an historical/epistemological study of the evolution of spectroscopy and in particular of colorimetry. The working principles of the historical color comparators and the visual color matching method, first proposed by Duboscq, stimulated us in the development of a five-step…

Spectroscopic methods of molecular structure identification and analysis constitute part of inorganic, organic, analytical, and physical chemistry in both undergraduate and postgraduate chemistry curricula. Despite the importance and complexity of the relevant concepts, it is only recently that studies on spectroscopy have started to appear in the…

To create general awareness among students and assess their level of chemical safety knowledge and attitudes, an online chemical safety survey was completed by chemistry students at Jai Hind Educational Trust's (JET's), Z. B. Patil College in Dhule, India, and Concord University in Athens, West Virginia, USA during the 2020-2021 academic year. A…

The diversity of scientific methods has received increasing attention in the field of science education. This paper aimed to investigate how preservice chemistry teachers perceive scientific methods and their diversity. Based on the theoretical framework of Brandon's Matrix and previous research, two tasks (i.e., Task 1 "understanding of the…

Calculating analytical uncertainties as a part of method validation is a relevant aspect of field and laboratory practices in instrumental analytical chemistry subjects, which usually require complex algorithms. This work describes the development and didactic use of an automatic and straightforward informatics tool, implemented in an Excel macro,…

Safety skills are recognized as essential lab skills for students, necessitating the incorporation of active learning of chemical safety education into undergraduate curricula. Meaningful engagement of students in training and education on principle-based lab safety skills, chemical information sources, and general safety instructions is crucial…

Numerous fires during demonstrations in secondary schools, museums, and science centers have occurred while using flammable liquids. This calls to light the need to educate undergraduate students and educators in the safe handling and use of these flammable chemicals. Understanding the benefits and risks of flammable liquids should be an essential…

This work investigates students' familiarity and understanding of laboratory safety knowledge among students in the College of Environmental Science and Safety Engineering at Tianjin University of Technology. A total of 1301 undergraduates and graduates participated in a survey of students' safety knowledge. The questionnaire covered the GHS…

Molecular modeling can be used as an excellent teaching method for providing better insight into the mechanism of free radical reactions. Due to its highly visual nature, it can affect and improve students' perception and visualization of chemistry phenomena. The majority of chemistry students will know how to represent a reaction between two free…

As the size of a nanoparticle is reduced, the fraction of surface atoms increases. It is interesting to note that various chemical and physical properties depend on the fraction of surface atoms. One of the most obvious questions that arise is how could one possibly estimate the fraction of surface atoms in a nanoparticle? Herein, we discuss…

Based on four types of laboratory safety questions (chemical, biological, physical, and medical), a cross-sectional survey of students at Kunming University of Science and Technology (China) was carried out to determine the awareness of laboratory safety among university students. The survey was completed by 335 students in total, with a response…

This essay assessed the chemical safety knowledge of students in the School of Chemistry and Chemical Engineering, Tianjin University of Technology, concerning chemical storage, heat operation, waste disposal, and emergency response. The results show that students' familiarity and understanding of safety knowledge is not satisfactory, especially…

The purpose of this study was to improve preservice chemistry teachers' understanding of surface tension by using guided-inquiry activities. Ten preservice chemistry teachers participated in this study. Data were collected with open-ended questions on the effect of molecular weight, branching, and temperature on surface tension before and after…

Chemistry and Chaos is a role-playing game that was developed to teach a wide variety of chemistry topics. The game uses the traditional role-playing framework to present material in an engaging and interactive format. The students take on the role of a particular type of chemist while the instructor guides them on an adventure to test their…

The paired-term biochemistry exam comprises five pairs of "unrelated" biochemical terms, where the collection of pairs, overall, is unique for each student. The student selects four of the pairs and answers three short essay questions about each, with a focus on how structure leads to function at the molecular level. Both…