ERIC Number: EJ1113957
Record Type: Journal
Publication Date: 2016-Sep
Abstractor: As Provided
Analysis of Copper-Bearing Rocks and Minerals for Their Metal Content Using Visible Spectroscopy: A First Year Chemistry Laboratory Exploration
Bopegedera, A. M. R. P.
Journal of Chemical Education, v93 n9 p1616-1622 Sep 2016
General chemistry and introductory chemistry students were presented with a laboratory exploration for the determination of the mass percent of copper in rock and mineral samples. They worked independently in the laboratory, which involved multiple lab (pipetting, preparing standard solutions by quantitative dilution, recording visible spectra with spectrometers) and data analysis skills (graphing and multistep stoichiometry calculations) using spreadsheet software. The results from the malachite mineral samples were used to evaluate the success of the copper extraction and analysis methods. Students were tasked with evaluating the economic viability of a "mining site" using their analysis of the malachite bearing rock samples. They worked with the entire class data set to make this evaluation. Students' lab reports and spreadsheets (submitted electronically) were evaluated using a grading rubric. Their engagement and enthusiasm for this exploration was high as they were eager to solve this real-life problem scenario that would be tackled by a professional chemist.
Descriptors: Chemistry, Science Instruction, Spectroscopy, Science Laboratories, Mineralogy, Geology, College Science, Interdisciplinary Approach, Problem Solving, Laboratory Experiments
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: firstname.lastname@example.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Authoring Institution: N/A
Grant or Contract Numbers: N/A