An Inquiry-Based Project Focused on the X-Ray Powder Diffraction Analysis of Common Household Solids
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| Main Authors: | , , , , , , , , , |
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| Format: | Recurso educativo Open Access |
| Language: | en |
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2015
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| _version_ | 1867181850928087040 |
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| author | Hulien, Molly L. Lekse, Jonathan W. Rosmus, Kimberly A. Devlin, Kasey P. Glenn, Jennifer R. Wisneski, Stephen D. Wildfong, Peter Lake, Charles H. MacNeil, Joseph H. Aitken, Jennifer A. |
| author_facet | Hulien, Molly L. Lekse, Jonathan W. Rosmus, Kimberly A. Devlin, Kasey P. Glenn, Jennifer R. Wisneski, Stephen D. Wildfong, Peter Lake, Charles H. MacNeil, Joseph H. Aitken, Jennifer A. Hulien, Molly L. Lekse, Jonathan W. Rosmus, Kimberly A. Devlin, Kasey P. Glenn, Jennifer R. Wisneski, Stephen D. Wildfong, Peter Lake, Charles H. MacNeil, Joseph H. Aitken, Jennifer A. |
| collection | Education Resources Information Center |
| contents | An Inquiry-Based Project Focused on the X-Ray Powder Diffraction Analysis of Common Household Solids Hulien, Molly L. Lekse, Jonathan W. Rosmus, Kimberly A. Devlin, Kasey P. Glenn, Jennifer R. Wisneski, Stephen D. Wildfong, Peter Lake, Charles H. MacNeil, Joseph H. Aitken, Jennifer A. Inquiry Active Learning Student Projects Science Activities Laboratory Experiments Science Experiments Undergraduate Students Chemistry College Science Science Instruction Physical Sciences Interdisciplinary Approach While X-ray powder diffraction (XRPD) is a fundamental analytical technique used by solid-state laboratories across a breadth of disciplines, it is still underrepresented in most undergraduate curricula. In this work, we incorporate XRPD analysis into an inquiry-based project that requires students to identify the crystalline component(s) of familiar household products. Centering the project on materials which students encounter in their everyday lives helps to demystify the technique, making it accessible to everyone with a basic understanding of crystallinity and unit cells. In an XRPD study, each crystalline component generates a unique set of peaks in the diffractogram. Comparing the collected diffractogram to a library of diffractograms for known crystalline materials allows students to identify the crystalline components in their unknown. Students must determine for themselves the chemical compositions of the possible unknowns, and link their findings back to the analysis of the collected data. Initially challenging, this is the part of the work they respond to most strongly. This lab includes a data collection component, but its inquiry-based objectives can still be achieved by providing the students with simulated diffractograms when the appropriate instrumentation is unavailable. |
| format | Recurso educativo Open Access |
| id | eric_EJ1084340 |
| institution | ERIC Institute of Education Sciences |
| language | en |
| publishDate | 2015 |
| record_format | eric |
| spellingShingle | An Inquiry-Based Project Focused on the X-Ray Powder Diffraction Analysis of Common Household Solids Hulien, Molly L. Lekse, Jonathan W. Rosmus, Kimberly A. Devlin, Kasey P. Glenn, Jennifer R. Wisneski, Stephen D. Wildfong, Peter Lake, Charles H. MacNeil, Joseph H. Aitken, Jennifer A. Inquiry Active Learning Student Projects Science Activities Laboratory Experiments Science Experiments Undergraduate Students Chemistry College Science Science Instruction Physical Sciences Interdisciplinary Approach An Inquiry-Based Project Focused on the X-Ray Powder Diffraction Analysis of Common Household Solids Hulien, Molly L. Lekse, Jonathan W. Rosmus, Kimberly A. Devlin, Kasey P. Glenn, Jennifer R. Wisneski, Stephen D. Wildfong, Peter Lake, Charles H. MacNeil, Joseph H. Aitken, Jennifer A. Inquiry Active Learning Student Projects Science Activities Laboratory Experiments Science Experiments Undergraduate Students Chemistry College Science Science Instruction Physical Sciences Interdisciplinary Approach While X-ray powder diffraction (XRPD) is a fundamental analytical technique used by solid-state laboratories across a breadth of disciplines, it is still underrepresented in most undergraduate curricula. In this work, we incorporate XRPD analysis into an inquiry-based project that requires students to identify the crystalline component(s) of familiar household products. Centering the project on materials which students encounter in their everyday lives helps to demystify the technique, making it accessible to everyone with a basic understanding of crystallinity and unit cells. In an XRPD study, each crystalline component generates a unique set of peaks in the diffractogram. Comparing the collected diffractogram to a library of diffractograms for known crystalline materials allows students to identify the crystalline components in their unknown. Students must determine for themselves the chemical compositions of the possible unknowns, and link their findings back to the analysis of the collected data. Initially challenging, this is the part of the work they respond to most strongly. This lab includes a data collection component, but its inquiry-based objectives can still be achieved by providing the students with simulated diffractograms when the appropriate instrumentation is unavailable. |
| title | An Inquiry-Based Project Focused on the X-Ray Powder Diffraction Analysis of Common Household Solids |
| topic | Inquiry Active Learning Student Projects Science Activities Laboratory Experiments Science Experiments Undergraduate Students Chemistry College Science Science Instruction Physical Sciences Interdisciplinary Approach |
| url | https://eric.ed.gov/?id=EJ1084340 |