1. The Unit of Chemistry Teacher Education, Department of Chemistry, Faculty of Science, University of Helsinki, A.I. Virtasen Aukio 1, 00560 Helsinki, Finland
2. Faculty of Education, University of Ljubljana, 1000 Ljubljana, Slovenia
3. Omnia, Lakelankatu 1, 02770 Espoo, Finland
4. Physical & Analytical Chemistry Laboratory (PachemLab), Department of Chemistry, Faculty of Basic Science, Universidad Metropolitana de Ciencias de la Educación, Santiago 7760197, Chile
5. Escuela de Postgrado, Universidad Tecnológica Metropolitana, Santiago 8940000, Chile