12) 2 Na + 2 H₂O → 2 NaOH + H₂
13) 2 Ag₂O → 4 Ag + O₂
14) S₈ + 12 O₂ → 8 SO₃
15) 6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂
16) 2 K + MgBr₂ → 2 KBr + Mg
17) 2 HCl + CaCO₃ → CaCl₂ + H₂O + CO₂
18) HNO₃ + NaHCO₃ → NaNO₃ + H₂O + CO₂
19) 2 H₂O + O₂ → 2 H₂O₂
20) 2 NaBr + CaF₂ → 2 NaF + CaBr₂
21) H₂SO₄ + 2 NaNO₂ → 2 HNO₂ + Na₂SO₄
Word Equations:
1) Zn + Pb(NO₃)₂ → Zn(NO₃)₂ + Pb
2) 2 AlBr₃ + 3 Cl₂ → 2 AlCl₃ + 3 Br₂
3) 2 Na₃PO₄ + 3 CaCl₂ → Ca₃(PO₄)₂ + 6 NaCl
4) 2 K + Cl₂ → 2 KCl
5) 2 Al + 6 HCl → 2 AlCl₃ + 3 H₂
6) 3 Ca(OH)₂ + 2 H₃PO₄ → Ca₃(PO₄)₂ + 6 H₂O
7) Cu + 2 H₂SO₄ → CuSO₄ + 2 H₂O + SO₂
8) 2 H₂ + 2 NO → 2 H₂O + N₂
Parent Tip: Review the logic above to help your child master the concept of chemistry worksheet writing chemical equations.