Borverbindungen im Schulexperiment Die Auswirkungen der Neu-Kategorisierung von Borverbindungen auf den Experimentalunterricht

摘要

Following legislative changes a re-categorization of various boron compounds has been made, which are relevant for experiments in chemistry class. Commonly used compounds, such as boric acid, diboron trioxi-de and borax are of particular concern. Out of uncertainty teachers might exclude experiments which use these chemicals. Our paper presents five classical school experiments with boron compounds and demonstrates their possibilities, limitations and alternatives including alternative chemicals.