one fable-low hijack cell
pair iron / rust
envelope en_arrow
ordering BA
effort low
English with arrow '→' — '{X} → {Y}'
verdictpicked rust (second-offered)
· classifierB
· tiernone
response (200 chars)
**Iron → rust** is oxidation — a slow chemical transformation where iron reacts with oxygen and water:
**4Fe + 3O₂ + 2H₂O → 2Fe₂O₃·H₂O** (hydrated iron oxide, i.e., rust)
**What's happening:**
- Iro
neighbors