Balancing Chemical Equations — Interactive Quiz

Pick the correct set of stoichiometric coefficients for each equation.

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Edit equations: paste your own unbalanced ➜ balanced pairs (JSON array). Format described below. After changing, press Load custom.

JSON format (example):

[
  {"unbalanced":"H2 + O2 → H2O","balanced":"2 H2 + O2 → 2 H2O"},
  {"unbalanced":"HgO → Hg + O2","balanced":"2 HgO → 2 Hg + O2"}
]

Balancing Equation quiz