School experiments on spontaneous endothermic reactions
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aDepartment of Teaching and Didactics of Chemistry, bDepartment of Inorganic Chemistry, Faculty of Science, Charles University, Prague, cDepartment of Chemistry, Pedagogical Faculty, Pedagogical University. Hradec Kralove, dDepartment of Chemistry, Pedagogical Faculty, Charles University, Prague, eDepartment of Chemistry, Agriculture Faculty, South-Bohemian University, Ceske Budejovice
Appropriate systems illustrating spontaneous proceeding of chemical reactions are proposed for chemistry teaching purposes.