Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.

Issue 1, 2019
Previous Article Next Article

Using a mechanistic framework to characterise chemistry students' reasoning in written explanations

Author affiliations


The central goal of this research study was to characterise the different types of reasoning manifested by high school chemistry students when building initial written explanations of a natural phenomenon. In particular, our study participants were asked to explain why a mixture of water and alcohol works as an antifreeze. Data collected in the form of written explanations were analysed using a mechanistic reasoning framework based on the characterisation of system components (e.g., entities, properties, activities, organisation) and paying attention to the causal models invoked by the participants in their explanations. Our analysis revealed that students at the same educational level construct a wide range of explanations for the same phenomenon that are indicative of different reasoning modes going from descriptive to relational to simple causal to emerging mechanistic. Although the explanations generated by students in our sample were not very sophisticated in terms of the causal models on which they relied, some participants were capable of generating mechanistic explanations using particulate models of matter. The framework for analysis introduced in this contribution can be of use to teachers and researchers in the characterisation of student reasoning.

Back to tab navigation

Publication details

The article was received on 28 Jun 2018, accepted on 23 Aug 2018 and first published on 27 Aug 2018

Article type: Paper
DOI: 10.1039/C8RP00159F
Citation: Chem. Educ. Res. Pract., 2019,20, 120-131

  •   Request permissions

    Using a mechanistic framework to characterise chemistry students' reasoning in written explanations

    P. Moreira, A. Marzabal and V. Talanquer, Chem. Educ. Res. Pract., 2019, 20, 120
    DOI: 10.1039/C8RP00159F

Search articles by author