StoichioAI

StoichioAI is for Hong Kong secondary chemistry. Students write calculation steps on a whiteboard. The AI reads the working and asks questions, instead of handing over the answer.

It is for students preparing for HKDSE Chemistry and for teachers who need to see how their own groups are doing. The interface, topics and AI replies can be switched between Traditional Chinese and English. English uses Hong Kong DSE chemistry wording and British spelling.

Students can:

Read an interactive lesson, then try the follow-up calculations
Write with Apple Pencil or a finger, or submit a photo from the camera or the photo library
Ask for a Socratic hint after a wrong attempt. Spoken feedback is Cantonese in Chinese and English in English
Review feedback, past attempts, points, and a learning suggestion based on their own weak spots
Teachers can:

Create a teaching group and invite students with a join code or a school email
See weak topics, common mistakes, and each student’s progress
Refresh an AI suggestion for the group or for one student
Preview questions and reference answers
Topics include reacting masses, concentration, pH, volumetric analysis, standard enthalpy changes, Hess's law, rate of reaction, molar volume of gases, equilibrium constant, shifts in equilibrium, organic synthesis calculations, rate equation, activation energy, atom economy, separation and purification, quantitative analysis, instrumental analysis, and analytical chemistry applications.

Sign in with an authorised school email. Points are awarded only the first time an exercise is answered correctly.