1. Copper carbonate (+ heat) → Copper oxide + Carbon dioxide [CuCO3 → CuO + CO2] is an example of   simple displacement reaction   decomposition reaction   synthesis or direct combination reaction   double decomposition reaction   Hint Half-n-half Clue   2. Iron + Sulfur → Iron sulfide [Fe + S → FeS] is an example of   double decomposition reaction   decomposition reaction   simple displacement reaction   synthesis or direct combination reaction   Half-n-half Clue   3. Zinc + Hydrochloric acid → Zinc chloride + Hydrogen [Zn + 2 HCl → ZnCl2 + H2] is an example of   decomposition reaction   synthesis or direct combination reaction   double decomposition reaction   simple displacement reaction   Half-n-half Clue   4. Iron + Sulfuric acid → Ferrous sulfate + Hydrogen [Fe + H2SO4 → FeSO4 + H2] is an example of   double decomposition reaction   decomposition reaction   simple displacement reaction   synthesis or direct combination reaction   Half-n-half Clue   5. Potassium chlorate (+ heat) → Potassium chloride + Oxygen [2 KClO3 → 2 KCl + 3 O2] is an example of   decomposition reaction   simple displacement reaction   synthesis or direct combination reaction   double decomposition reaction   Half-n-half Clue   6. Calcium chloride + Sodium carbonate → Calcium carbonate + Sodium chloride [CaCl2 + Na2CO3 → CaCO3 + 2 NaCl] is an example of   decomposition reaction   simple displacement reaction   double decomposition reaction   synthesis or direct combination reaction   Half-n-half Clue   7. Magnesium + Copper sulfate → Magnesium sulfate + Copper [Mg + CuSO4 → MgSO4 + Cu] is an example of   simple displacement reaction   double decomposition reaction   synthesis or direct combination reaction   decomposition reaction   Half-n-half Clue