Chemistry editor plugin for Atto text editor, which is maintained by Geoffrey Rowland has been updated to a new version v2.9-1 which supports Moodle 2.7 to 2.9.
Chemistry Editor plugin for Atto allows you to edit chemistry equations in Moodle 2.7, or later, using the mhchem extension to the MathJax or TeX filter. Useful for full and ionic equations, isotopes, equilibrium reactions, thermochemistry and reaction kinetics. Includes a periodic table of element symbols. Read More