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Direct linkPreeti S. Kulkarni; Varuna S. Watwe; Sakshi S. Khatavkar; Akshay A. Khandagale; Sunil D. Kulkarni – Journal of Chemical Education, 2023
Flame Emission Spectroscopy (FES) is a powerful analytical technique widely used for identifying and quantifying elements in various samples. In this laboratory experiment, undergraduate students were introduced to FES and its significance in analytical chemistry. The experiment aimed to provide students with hands-on experience in constructing…
Descriptors: Undergraduate Students, Chemistry, Science Instruction, Spectroscopy
Hunter, Rebecca A. – Journal of Chemical Education, 2021
An important objective of any analytical chemistry course is for students to generate and interpret data from the analysis of complex, real-world samples in order to assess the effectiveness of the analysis method, including the calibration. In this laboratory exercise, students directly compare calibration methods (external standards and standard…
Descriptors: Chemistry, Science Instruction, Food, Energy
Wang, Cong; Liu, Xiufeng; Wang, Lei; Sun, Ying; Zhang, Hongyan – Journal of Science Education and Technology, 2021
Assessing scientific argumentation is one of main challenges in science education. Constructed-response (CR) items can be used to measure the coherence of student ideas and inform science instruction on argumentation. Published research on automated scoring of CR items has been conducted mostly in English writing, rarely in other languages. The…
Descriptors: Automation, Scoring, Accuracy, Responses
