Inquiry- and context-based learning (IBL and CBL, respectively) can lead to improved student outcomes, including increased motivation and interest, the development of critical thinking skills, and improved assessment results. This study outlines the application of IBL research projects in third-year university Environmental Chemistry and…

Given the recent state of social distancing, the online lab experience discussed in this article offers an economical and versatile approach to online undergraduate chemistry lab instruction. With videoconferencing software, this experience is easily adaptable to a socially distanced learning environment, although it was initially designed for a…

Ever since Newton's groundbreaking work on the composed nature of light, additive colour mixing (and its laws) are subject to the interest of physicists as well as other sciences. In this paper, we present a setup for simple lab or home experiments on additive colour mixing and the laws of colour mixing. Students use the screen of a laptop or…

Course-based Undergraduate Research Experiences (CUREs) incorporate research opportunities into the existing curriculum often by providing alternatives or replacing the traditional cookbook-based laboratory courses. Over the past 50 years, CURE courses have been shown to benefit both students and faculty members alike. Despite the large number of…

This study reported the effects of a research-based laboratory module on students' scientific research, green chemistry, and research skills self-efficacy in a second-semester general chemistry laboratory course. The research-based laboratory module was designed based on the course-based research experience (CURE) model, which features materials…

A set of inexpensive and pedagogically rich experiments focusing on S[subscript N]1, E1, and E2 reactions have been updated to include modern computational and spectroscopic analyses. The S[subscript N]1 experiment involves treatment of "tert"-amyl alcohol with hydrochloric acid to generate the corresponding alkyl chloride, which is used…

In high school and elementary college physics labs the measurement of vertical distance is often required. Measuring the distance an object falls or the vertical displacement of springs in a Hooke's law experiment are commonplace. Determining these distances to perhaps a millimeter or two of precision is difficult without an expensive height gauge…

Arduino microcontrollers are becoming increasingly popular in the physics/astronomy community. These devices can provide more in-depth labs on mechanics, electricity and magnetism, light and optics, etc., in addition to programming. These devices can be readily utilized to reach more non-physics/astronomy majors and underrepresented STEM students.…

The catalytic hydrogenation of alkenes and alkynes is an important part of the undergraduate chemistry curriculum and is a fundamental process in chemical industry. Inquiry-based laboratory activities are presented that investigate the hydrogenation of alkynes on a nanoparticle palladium surface to form alkenes, which go on to form alkanes. Alkyne…

Thermal conductivity is generally the tool of choice for quantification of fixed gases, particularly lighter-than-air gases. Unfortunately, gas chromatography-thermal conductivity detectors (GC-TCDs) are difficult to introduce in first- and second-year chemistry courses where the cost and number of instruments, as well as the space required, is…

The purpose of this communication is to describe and document the challenges of delivering a general chemistry laboratory experience to students and of moving toward multiple small assessments and away from high-stakes examinations. By leveraging of activities that were already in place prior to the pivot to online learning, namely, an electronic…

Lab courses are a significant component of biochemistry and molecular biology (BMB) education. In teaching the labs, we combine established techniques with novel approaches. Lab formats have also moved from traditional cookbook style labs to guided inquiry to course-based undergraduate research experiences (CUREs), where faculty bring their own…

Biodiesel is an important biomass, largely employed in the transport sector and produced from vegetable oils. Additionally, waste cooking oils may be reused to produce biodiesel fuel, minimizing environmental pollution. A laboratory experiment that affords a widespread way to discuss degradation concepts and tools for used vegetable oil…

For conducting laboratory experiments on Fresnel diffraction, the use of a simple point light source from an LED and the application of a modern smartphone for photographing the diffraction patterns are proposed. The developed devices allow the experiments to be carried out under normal laboratory lighting.

When injecting dye into a vortex, one finds that the dye remains captured around the vortex core over minutes, despite the fact that the vortex (and the dyed region) is strongly time-dependent. According to a recent theory, three-dimensional time-dependent vortices should be defined as rotating, material-holding regions of the fluid. Vortices…