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The car catalyst–students’ misconceptions and how to challenge them

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Author(s): ELENI DAOUTSALI | HANS-DIETER BARKE

Journal: Review of Science, Mathematics and ICT Education
ISSN 1791-261X

Volume: 5;
Issue: 2;
Start page: 71;
Date: 2011;

Keywords: Chemical education | car catalyst | students´ misconceptions | mental models

ABSTRACT
The objective of this study was to find out what students already know about the car catalyst in order to design a module to pass on the scientific mental model to them. Therefore a questionnaire was given to students in 9th, 10th and 11th grade pupils. Questions referred to what happens inside a catalyst with the incoming gases. The misconception of a filter or a further combustion engine could be localized. According to the students the catalyst is equipped with netting which slices the molecules. According to the misconceptions received a topic was designed to overcome and cure these concepts and to clarify and give the pupils a valid picture of what happens inside the catalyst. In a post-test results are discussed.
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