mdh.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Undergraduate students’ conceptions of enthalpy, enthalpy change and related concepts
Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics.ORCID iD: 0000-0002-5823-1472
Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics.
2014 (English)In: Chemistry Education Research and Practice, ISSN 1109-4028, Vol. 15, no 3, 336-353 p.Article in journal (Refereed) Published
Abstract [en]

Research shows that students have problems understanding thermodynamic concepts and that a gap exists at the tertiary level related to more specific chemistry concepts such as enthalpy. Therefore, the aim of this study is to construct undergraduate students’ conceptions of enthalpy, its change and related concepts. Three explorative small-scale studies were conducted at two Swedish universities. Questionnaires, exam questions, hand-ins and interviews covered a range of issues from chemical thermodynamics in general to specific questions about enthalpy and its change, internal energy and its change, heat and work. Data were analysed iteratively and qualitative categories were constructed (F1-2, F4-9). The underlying conceptions indicate that constant pressure is explicitly expressed but disregarded as the answer is given (F1), that work is described as mechanical work (F2), that enthalpy is used as a form of energy (F4), and that enthalpy is used for enthalpy change and vice versa (F5). The logical conceptions indicate that molar enthalpy determines the heat given off by a reaction and not the path taken (F6), that constant pressure/constant volume and the definition of enthalpy change are problematic (F7), that students argue for the case when ΔH = ΔU instead of ΔH = q (F8), and that there are different ways to interpret the given tasks (F9). This study offers insight into the ways students use enthalpy and its change when arguing and solving qualitative tasks. How the categories may be used as well as other implications for teaching and research are addressed in the paper.

Place, publisher, year, edition, pages
2014. Vol. 15, no 3, 336-353 p.
National Category
Didactics
Research subject
naturvetenskapernas och teknikens didaktik
Identifiers
URN: urn:nbn:se:mdh:diva-21674DOI: 10.1039/C2RP20135FISI: 000339625700008Scopus ID: 2-s2.0-84904314510OAI: oai:DiVA.org:mdh-21674DiVA: diva2:651753
Available from: 2013-09-27 Created: 2013-09-26 Last updated: 2015-03-25Bibliographically approved

Open Access in DiVA

fulltext(1508 kB)196 downloads
File information
File name FULLTEXT01.pdfFile size 1508 kBChecksum SHA-512
b69b3a89d1dc0fb02afa1c6dd2dfafcac0a7e10102f6900b76c654c1e858c7adbd31a3473b0464757be07409dc57cd410969dae524073c14e744843f6b963246
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopushttp://xlink.rsc.org/?doi=C2RP20135F

Search in DiVA

By author/editor
Nilsson, TorNiedderer, Hans
By organisation
Educational Sciences and Mathematics
Didactics

Search outside of DiVA

GoogleGoogle Scholar
Total: 196 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 208 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf