Molecule Builder & Reaction Balancer
Drag atoms onto the canvas to form molecules. Practice balancing common reactions with instant feedback.
Builder Controls
H
O
C
Reaction Balancer
Adjust coefficients until balanced.
Notes
Bonds & valences here are a **teaching approximation** (single bonds only). Real chemistry can be more complex (multiple bonds, geometry).
Builder Scene
Selected component
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Atoms
0
Bonds
0
Free valence (sum)
0