Examination of Secondary School Students' Ability to Transform among Chemistry Representation Levels Related to Stoichiometry

The aim of this qualitative case study was to explore secondary students’ ability to transfer among representation levels in relation to stoichiometry. In the study, 40 students in the 11th grade from two classes of an Anatolian high school in the east part of Turkey were selected as sample group. The data were collected by using a questionnaire consists of ten questions designed specifically target the transformation from macroscopic to symbolic, from symbolic to submicroscopic, and from submicroscopic to symbolic level. The analysis of the data was carried out both deductively and inductively by content analysis method. The results indicate that many students were unable to establish an appropriate link among chemical representation levels regarding stoichiometry.