Chemical Formula Tutor v1.3
Makes learning formula writing easy, at home or in class.
Chemistry Teachers and Students will appreciate the intuitive,
interactive Drag-and-Drop interface.
Helpful tips and cursors, built-in Atom Counter, Learn Mode,
Test Mode (with or without timing), and scoring.
Customise Levels and Formulas (among other things)
with the intelligent Editor.

Chemical Formula Tutor is the Shareware version. The full version can be purchased by clicking on the "CLICK HERE TO ORDER" button below for around 40.00USD.