The Pauli exclusion principle is a key postulate of the quantum theory and informs much of what we know about matter. In terms of electronic structure, the lone, deceptively simple mathematical requirement is that the total wave function be antisymmetric with respect to the exchange of any two electrons. However, visualizing the effect on the…

The research aims to determine the experiences and views of the science pre-service teachers on the use of the science stories. In this research, among other qualitative research types, phenomenology research was used to obtain data. The research has been carried out with 71 pre-service teachers studying in the science education program of…

Training in chemistry is essential for undergraduate medical students; however, at the National University of Colombia, basic chemistry courses are associated with high fail rates and low academic performance with regard to first semester students, especially in vulnerable special admission populations. A longitudinal study was carried out via…

This paper reports on a study aiming at examining the effect of using digital concept maps in inquiry learning. Digital concept maps were asked to be created in different stages of the inquiry learning sessions to support their investigations. The participants were a total of 24, 10th-grade students enrolled in a chemistry course at a public high…

Background: Effective teaching of university chemistry in an online environment not only requires teachers to have specific discipline content knowledge; it also requires them to have knowledge and skills in technology-enhanced teaching practices. When transitioning from traditional face-to-face teaching into online contexts, teachers must learn…

Graduate teaching assistants (GTAs) hold a unique positionality as instructors and research mentors to undergraduate students, research mentees to faculty members, and employees to an institution. With limited pedagogical training and teaching resources, the enactment of planned teaching activities and learning resources may be influenced by how…

With the call for reformed teaching practices in STEM education, there is a need to spread effective teaching practices to classrooms. Affective drivers can lead an instructor to improve their teaching practices, but they are infrequently addressed or recognized. This case study followed one instructor through her General Chemistry course over a…

Chemistry students at community colleges often experience a lack of hands-on research opportunities, which can be a significant disadvantage when they transition to four-year universities. To address this, the Summer Chemistry Research Opportunities for Community College Students (SCROCCS) was established in 2022 by graduate students at the…

A dual-enrollment course was designed in which the elementary concepts of organic chemistry were introduced to high school students. Students were assessed at the end of the term using an American Chemical Society (ACS) standardized exam. The same exam was given to corresponding traditional on-campus sections of the same class taught by the same…

Herein we present an engaging description of the existent analogy between social distancing during the COVID-19 pandemic and the collision cross-section of particles as defined in the collisional model for a chemical reaction. In addition, the link between collision cross-sections and kinetic rate constants is thoroughly established, bridging…

Volumetric titrations are an accurate and precise analytical method, which explains their use in industrial and research settings and their inclusion in senior secondary chemistry curricula around the world. Students often have difficulty understanding the intricacies of titrations because they are novices being presented with a long list of…

Data-handling, processing, and analysis skills are an integral part of a chemist's skill set and, more generally, are highly sought by employers. We report a self-directed workshop to develop and advance these key skills using the popular spreadsheet program Microsoft Excel. Making use of its accessible user interface, various contextualized…

The use of synchronous remote teaching methods in two undergraduate analytical chemistry courses during the COVID-19 pandemic is described. Classes were convened using cloud-based video conferencing software, and the majority of class time involved students working in small groups on worksheets. All group activities were followed by a whole-class…

Investigation of the kinetics of phosphorescence decay is a suitable learning task in studying the formal kinetics, and also properties of crystal phosphors. Kinetics of phosphorescence decay of crystal phosphors can be experimentally investigated at home as part of distance learning, using a conventional digital photo camera and a luminescent…

The closure of campuses in early 2020 due to the COVID-19 pandemic meant that scheduled practical activities for introductory chemistry students could not take place. The first practical class started prior to shutdown, and 21.5% of the students undertook the face-to-face offering. The remainder completed an online offering consisting of the same…