AI Chemistry
DSE Chemistry · Equation OCR + balancing · PhET reaction simulations · SBA report AI
HK-tuned AI Chemistry platform covering DSE mole concept, organic chemistry, redox, acid-base equilibrium, chemical bonding, electrochemistry. Students photograph handwritten chemical equations; OCR + AI step-by-step balances coefficients and flags errors. Built-in PhET molecular simulations from University of Colorado. Auto-grading for SBA experiment reports aligned with HKEAA marking.
DSE Chemistry aligned · Equation OCR · PhET reaction sims · SBA report AI
AI Chemistry marking demo
Student photographs handwritten chemical equation → OCR recognises → AI flags balancing errors + reaction mechanism
- Chemical equation handwritten OCR
- Organic reaction mechanism AI
- PhET molecular simulations
Practice items on ESSAi are AI-generated or ESSAi-authored in exam formats (for example DSE / TSA / HKAT format), with reference to the EDB curriculum. They are not HKEAA examination papers, sample papers, practice papers or marking schemes, and are not original exercises from any textbook or commercial assessment publisher. See our Copyright Notice. Copyright Notice
Chemistry teacher pain · ESSAi solution
DSE Chemistry requires balancing equations, mole calculations, mechanisms — AI must read handwriting + flag step-by-step errors; generic AI can't
ESSAi OCR for handwritten chemical equations (with subscripts, balance arrows) + AI step-by-step mole/coefficient/mechanism solver aligned with HKEAA Paper 1.
Chemistry labs have safety constraints (strong acids, exothermic) — students can't safely repeat experiments to master concepts
Built-in PhET chemistry simulations from University of Colorado — acid-base titration, equilibrium, atomic structure, organic reactions — students safely repeat 24/7.
Marking 30 SBA chemistry reports takes 2 evenings — checking error analysis, sig figs, equation balancing
AI auto-grades SBA Chemistry reports — flags error analysis, units, sig figs, equation balancing. HKEAA SBA marking aligned. Teacher final review only.
Core features
Chemical equation OCR + balancing
Students photograph handwritten equations; AI recognises + balances step-by-step, flagging mass / charge / oxidation-state errors.
Organic reaction mechanism AI
Input organic structures; AI predicts products, draws arrow-pushing mechanisms, flags nucleophilic/electrophilic sites. DSE organic chemistry aligned.
PhET molecular simulations
University of Colorado PhET chemistry simulations in ESSAi self-study — titration, equilibrium, atomic structure, bonding, organic reactions covering DSE topics.
SBA Chemistry report AI assistant
Upload report PDF / photo; AI flags error analysis, units, sig figs, equation balancing, procedural logic. HKEAA SBA marking aligned.
AI-generated · DSE-format practice training + AI Tutor
AI-generated · DSE-format Paper 1 / Paper 2 practice in ESSAi question bank; AI Learning Companion generates similar practice based on student weakness, explains mechanisms via images and video.
Three steps
Teacher assigns DSE Chemistry practice
Pick AI-generated · DSE-format practice / school-based exercises → assign to S4-S6 classes.
Students photograph handwritten equations
OCR recognises → AI marks in real time + flags balancing / mechanism errors.
Teacher reviews class-level analysis
Which mole calculations went wrong? Which mechanisms need re-teaching? Dashboard breaks down by question.
DSE Chemistry topic coverage
S3
Bridging to senior secondary · Matter, reactions intro
5 topics · aligned to HKEAA / EDB curriculum
ESSAi Chemistry aligned with HKEAA Paper 1A/1B/2 · Equation OCR · PhET integrated
“Students struggle most with organic mechanisms; AI explains them with images and video so well that even I find it inspiring. SBA report error-analysis tagging is detailed enough that students actually remember it.”
— HK secondary chemistry head