1. Copper carbonate (+ heat) → Copper oxide + Carbon dioxide [CuCO3 → CuO + CO2] is an example of   double decomposition reaction   simple displacement reaction   synthesis or direct combination reaction   decomposition reaction   Hint Half-n-half Clue   2. Potassium chlorate (+ heat) → Potassium chloride + Oxygen [2 KClO3 → 2 KCl + 3 O2] is an example of   double decomposition reaction   simple displacement reaction   decomposition reaction   synthesis or direct combination reaction   Half-n-half Clue   3. Iron + Sulfuric acid → Ferrous sulfate + Hydrogen [Fe + H2SO4 → FeSO4 + H2] is an example of   double decomposition reaction   synthesis or direct combination reaction   simple displacement reaction   decomposition reaction   Half-n-half Clue   4. Zinc + Hydrochloric acid → Zinc chloride + Hydrogen [Zn + 2 HCl → ZnCl2 + H2] is an example of   simple displacement reaction   decomposition reaction   synthesis or direct combination reaction   double decomposition reaction   Half-n-half Clue   5. Magnesium + Oxygen → Magnesium oxide [2 Mg + O2 → 2 MgO] is an example of   simple displacement reaction   decomposition reaction   double decomposition reaction   synthesis or direct combination reaction   Half-n-half Clue   6. Sodium oxide + Water → Sodium hydroxide [Na2O + H2O → 2 NaOH] is an example of   synthesis or direct combination reaction   double decomposition reaction   simple displacement reaction   decomposition reaction   Half-n-half Clue   7. Potassium chloride + Silver nitrate → Potassium nitrate + Silver chloride [KCl + AgNO3 → KNO3 + AgCl] is an example of   double decomposition reaction   simple displacement reaction   synthesis or direct combination reaction   decomposition reaction   Half-n-half Clue