TOOL
Add elements to the flask in the exact amounts a real compound needs — not one more, not one less — and watch it react instantly. 140+ compounds organized into 8 levels, from the simplest molecules to the most complex salts, with hints for when you're stuck and an educational card for every discovery.
Chemical Fusion turns formula-writing into a discovery game: no memorizing rules in the abstract — every compound is "made" by combining exactly the atoms its real formula calls for, and pulling it off unlocks a card with its name, formula, and a fun fact about what it's actually used for.
2 Fe + 3 O form Fe₂O₃, but just 1 Fe + 1 O form FeO: the ratio matters, just like in real chemistry.
Simple molecules, oxides, halides, sulfides, hydrides & alloys, hydroxides & acids, complex salts, and a final challenge.
From water and ammonia to sulfuric acid and copper sulfate, each with its formula, name, and real-world use.
Stuck? Ask for a hint: it suggests the ingredients for the next compound within reach, without giving away the result.
Your collection of discoveries and the level you've reached are saved automatically between sessions.