This experiment combines analytical techniques of solid phase microextraction and gas chromatography-mass spectrometry with easily relatable and accessible plant volatile chemistry (floral and vegetative scents of local/available plants). The biosynthesis and structure of these chemicals are of interest in the areas of organic chemistry,…

Energy drinks, as familiar consumer products, have been widely used in laboratory courses to help promote student interest, as well as to connect lecture concepts with laboratory work. Energy drinks contain B vitamins: pyridoxine (vitamin B6) and riboflavin (vitamin B2) of which amounts are high enough to be of concern. In this work, a fast and…

The Distributed Drug Discovery (D3) program trains students in three drug discovery disciplines (synthesis, computational analysis, and biological screening) while addressing the important challenge of discovering drug leads for neglected diseases. This article focuses on implementation of the synthesis component in the second-semester…

A positive attitude to a subject may be congruent with higher achievement; however, limited evidence supports this for students in undergraduate chemistry--this may result from difficulties in quantifying attitude. Therefore, in this study, the Attitude to the Study of Chemistry Inventory (ASCI)--a validated instrument to quantify attitude, was…

This study is on correlation between entry qualification and performance in A'level chemistry at the school of Basic and remedial studies, Yobe State University, Damaturu. The grade in chemistry at the West African Examination Council (WAEC) or National Examination Council (NECO) is the predictor while the criterion is the grade earned in the…

As in many countries, public school students in the Philippines have lower levels of achievement compared to private school students. We study whether there is a motivation gap related to this achievement gap by assessing a range of motivational constructs (sense of self, facilitating conditions, and achievement goals) drawn from personal…

One common notion is that all classrooms using Process Oriented Guided Inquiry Learning (POGIL) are the same. Though POGIL has essential components, this research found that students' conceptual achievement, a classroom outcome, can be differentially affected by professors' style of POGIL implementation. Audio/ video recordings of student groups…

Women take qualifying exams and enter medical school at substantially lower levels than predicted by their interest in medical degrees at the end of high school. We examined how science course experiences contribute to gendered attrition in premed using a multicohort data set of 8,253 undergraduates taking the traditional premed sequence of…

Interest in student-centered active learning pedagogies is widespread, but discipline-specific examples of implemented instructional approaches are needed to bridge the gap between pedagogical ideas and their enactment. One of these approaches, Modeling Instruction, is an active, student-centered approach wherein students learn through…

We would like the general public to be able to make informed choices about issues that involve chemicals and which impact on personal lifestyle and even national policy. Helping them make the right decisions requires chemists to become more articulate. Here is an account of a chemist who started his career writing articles for scientific journals…

Since at least the eighteenth century scientific knowledge (then natural philosophy) was produced in groups of experts and specialists and was transmitted in schools, where, future experts and specialists were trained. The design of teaching has always been a complex process particularly in recent years when educational aims (for example, teaching…

In our teaching practice, we find that a large number of first-year university physics and chemistry students exhibit some difficulties with applying Newton's third law to fluids because they think fluids do not react to forces. (Contains 1 table and 3 figures.)

We present a number of simple demonstration experiments recorded with high-speed cameras in the fields of gas dynamics and thermal physics. The experiments feature relatively slow combustion processes of pure hydrogen as well as fast reactions involving oxy-hydrogen in a stoichiometric mixture. (Contains 4 figures.)

The purposes of the study were to assess preservice teachers' domain-specific epistemological beliefs and to investigate whether preservice teachers distinguish disciplinary differences (physics, chemistry, and biology) in domain-specific epistemological beliefs. Mixed-method research design guided the present research. The researcher explored…

On the basis of responses to written questions administered to more than one thousand introductory chemistry students, we claim that students often rotely apply memorized combustion rules instead of reasoning based on explanatory models for what happens at the molecular level during chemical reactions. In particular, many students argue that…