Abstract: The preparation of ammonium ferrous sulfate represents a classic experiment in inorganic chemistry education. Conventional methodologies for this experiment are limited to basic crystal preparation and characterization, resulting in overly simplistic and pedagogically static content. Aligned with the innovative objectives of the Chemistry “101 Plan”, this study introduces an enhanced experimental design that incorporates advanced crystal morphology control techniques while employing smartphone-based AI imaging for real-time morphological observation. This pedagogical innovation significantly enriches the experiment’s educational value by: (1) expanding students’ exposure to cutting-edge developments in inorganic materials science; (2) cultivating essential research competencies through hands-on investigation; (3) fostering an appreciation for the aesthetic dimensions of chemical phenomena. The redesigned experiment establishes a robust foundation for training highly competent, research-oriented chemistry professionals with both technical proficiency and scientific creativity.

Key words: Ammonium ferrous sulfate, Crystal morphology control, Smartphone technology, AI imaging, Chemistry “101 Plan”