The substitution of carbonyl compounds with liquid bromine as a brominating agent is the most commonly employed synthesis method for a-bromoacetophenone and its derivatives. However, liquid bromine possesses certain drawbacks, such as volatilization, high toxicity, strong corrosion, and poor reaction selectivity, which limit its application and…

Resonance is a crucial concept in Organic Chemistry that enables both deriving chemical properties from molecular structures and predicting reactions by considering electron density distribution. Despite its importance for problem-solving and learning success, learners encounter various difficulties with this concept. Although prior research…

Working with approximations is a common practice in physics. This paper presents an exploratory study of student understanding of some of the elementary aspects of approximations encountered in college physics. For this purpose, a questionnaire (a set of 14 multiple-choice questions) was developed to probe how students dealt with these aspects in…

Many undergraduate chemistry and biochemistry students pursue careers in healthcare. Biomaterials, designed to harmonize with the complexity of the human body, have become increasingly significant in medicine as implants, drug delivery vehicles and tissue scaffolds. We believe it is essential that undergraduates are exposed to biomaterial…

The current study investigated the effectiveness of teaching performance in seven faculties at Birzeit University from students' point of view. A questionnaire, consisting of (50) items based on the domains of teaching planning, teaching execution, personal features and communications skills and evaluating students' learning, was developed and…

Electrostatic force is the preliminary and fundamental topic that forms the bedrock on which the conceptual framework of "electromagnetism" is built. Being a 'vector' quantity, electromagnetic force naturally inherits direction as well as magnitude. The conceptualization of such physical quantities may pose a challenge. The present work…

Here, a relatively simple laboratory experiment of a physical pendulum, suitable for students of science and engineering in the first courses of university physics, is presented to illustrate its dynamic behavior and to determine its inertia moment. To this end, a long wooden rod of length L = 99.8 cm and cross-section radius R = 1.73 cm was used…

At a time when all course instruction had been moved online, it seemed wishful thinking for a group of undergraduate students to begin authentic, independent research. With curious, creative, and motivated mindsets; however, we learned not only that such research was possible during a global pandemic, but that it could provide vital learning…

Active-learning pedagogies often require group work. We tested aspects of forming groups in a nonmajors Biology class. We asked whether large or small groups affected student learning outcomes and attitudes towards working in groups. We placed students in groups of three or six and students stayed in their groups for the term. We measured learning…

The study is an analysis of the reaction of students in a faculty of natural and agricultural sciences (NAS) to subtitles and also includes an investigation of their responses thereto. Reception of and responses to academic English (close to verbatim transcription), plain English, and keyword English subtitles were explored by showing participants…

This study aimed to investigate the relationship between students' adjustment to the academic learning process (academic adjustment) and motivation for learning science. The study was conducted with the participation of university students enrolled in science-related programs. A correlational research design was utilized in which data was…

The Brønsted-Lowry acid-base model is fundamental when discussing acid and base strength in organic chemistry as many of the reactions include a competing proton transfer reaction. This model requires evaluating chemical stability "via" a consideration of electronic granularity. The purpose of this study is to identify students' mental…

While elimination reactions are ubiquitous in organic chemistry textbooks, their implementation in undergraduate laboratories still suffers from a lack of reliable and easy setup procedures. This paper describes an easy-to-implement set of elimination experiments in the pentanol and bromopentane series using a modified Hickman distillation head.…

In this laboratory experiment, a guided inquiry exploring the physicochemical principles of the dissolution of Ca(OH)[subscript 2](s) in water is proposed for laboratory classes in university and high school. As part of students' inquiry, two experimental approaches are used. One is the change in solubility with temperature revealed by measuring…

The chemistry of 4d and 4f metals was investigated at the undergraduate level in an effort to incorporate f-element chemistry in the curriculum. This was accomplished through microwave-assisted synthesis of 1,10-phenanthroline (phen) coordination compounds [Eu(phen)(subscript 3)](PF[subscript 6])[subscript 3] and [Ru(phen)(subscript…