Dry Ice as an Alternative Leavening Agent for Pancakes to Demonstrate Phase Transitions or Chemical Transformations

Graaf, Ruvan de; Crough, Kiernan; Steiner, Isaac; Hudson, Reuben

doi:10.1021/acs.jchemed.1c00896

Cited by 2 publications

(3 citation statements)

References 17 publications

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“…If the demonstration is for college students, they can work in groups to participate in the synthesis of polyaniline and further explore the factors affecting silver growth. Therefore, this project was not only treated as a “demonstration” but also an exploratory “activity” or “experimental exercise” for chemistry major students …”

Section: Methodsmentioning

confidence: 99%

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A Demonstration of Silver with Various Morphology Recovered from Wastewater

Zhou

et al. 2023

J. Chem. Educ.

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Silver and its compounds have been widely used in experimental teaching, industrial production, and other fields. In these processes, a large amount of wastewater containing silver is usually produced, which might contribute to environmental pollution. Therefore, recycling silver from wastewater not only has good economic value but also meets the requirements of sustainable development, which is also a hot topic emerging in chemical teaching. In this demonstration, polyaniline is used to efficiently recover silver ions from simulated wastewater. Through the regulation of time, temperature, and the morphology of polyaniline particles, a series of silver with rich morphology is obtained, showing the beauty of chemistry and arousing students’ interest in chemistry. This demonstration can cultivate audiences awareness of resource recycling and environmental protection and guide them to enjoy the fun of chemistry.

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Section: Methodsmentioning

confidence: 99%

“…Therefore, this project was not only treated as a "demonstration" but also an exploratory "activity" or "experimental exercise" for chemistry major students. 29…”

Section: Chemical Major Studentsmentioning

confidence: 99%

A Demonstration of Silver with Various Morphology Recovered from Wastewater

Zhou

et al. 2023

J. Chem. Educ.

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“…There are documented disconnects between chemistry students’ experience outside and within the classroom space, and acids normally used in laboratory experiments are not familiar to the average student. In recent years, there have been a number of food experiments for the general chemistry laboratory. − We hope to contribute to the food investigation space with an instructional tool that supports student discussion while providing instructors with resources to investigate class understandings. Misinterpretations are common among chemistry lab students, and the formation of connections between different forms of knowledge can be challenging .…”

Section: Introductionmentioning

confidence: 99%

Titrating Consumer Acids to Uncover Student Understanding: A Laboratory Investigation Leading to Data-Driven Instructional Interventions

Mandel

Le²,

Ward³

et al. 2022

J. Chem. Educ.

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Students often enter chemistry laboratory courses with a well-documented disconnect between their experiences outside the classroom and the procedures, concepts, and techniques that occur in our courses. Strong base, weak acid titration experiments are present in general chemistry laboratories but also relate to foods our students are familiar with. An experiment using commonly consumed acids offers an opportunity to decrease the distance students may feel between the laboratory and everyday chemistry. By investigating reagents that may be purchased from the grocery store (citric acid in citrus soda, acetic acid in vinegar, or acetyl salicylic acid in aspirin), students gain an opportunity to see the chemistry they are learning in their everyday foods and medicines. This experiment uses an automatic titrator such as LabQuest to obtain the titration curve of each food acid. Students then use the shapes of these curves to identify a given unknown solid and aqueous version of one of these acids. This was carried out in a university general chemistry lab course, and quantitative and qualitative analysis of how the class approached the graphical identification process was performed. This article lays out an approach to teaching acid−base titrations that holds the potential to link students' chemistry lives both in and outside of the classroom while offering instructors a low-stakes method of evaluating student understanding. The development of this food acid investigation and modifications possible for online or hybrid learning are discussed.

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Dry Ice as an Alternative Leavening Agent for Pancakes to Demonstrate Phase Transitions or Chemical Transformations

Cited by 2 publications

References 17 publications

A Demonstration of Silver with Various Morphology Recovered from Wastewater

A Demonstration of Silver with Various Morphology Recovered from Wastewater

Titrating Consumer Acids to Uncover Student Understanding: A Laboratory Investigation Leading to Data-Driven Instructional Interventions

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