1. Magnesium + Oxygen → Magnesium oxide [2 Mg + O2 → 2 MgO] is an example of   double decomposition reaction   decomposition reaction   simple displacement reaction   synthesis or direct combination reaction   Hint Half-n-half Clue   2. Aluminum chloride + Sodium hydroxide → Aluminum hydroxide + Sodium chloride [AlCl3 + 3 NaOH → Al(OH)3 + 3 NaCl] is an example of   double decomposition reaction   synthesis or direct combination reaction   decomposition reaction   simple displacement reaction   Half-n-half Clue   3. Calcium chloride + Sodium carbonate → Calcium carbonate + Sodium chloride [CaCl2 + Na2CO3 → CaCO3 + 2 NaCl] is an example of   decomposition reaction   synthesis or direct combination reaction   double decomposition reaction   simple displacement reaction   Half-n-half Clue   4. Magnesium + Copper sulfate → Magnesium sulfate + Copper [Mg + CuSO4 → MgSO4 + Cu] is an example of   simple displacement reaction   synthesis or direct combination reaction   double decomposition reaction   decomposition reaction   Half-n-half Clue   5. Iron + Sulfuric acid → Ferrous sulfate + Hydrogen [Fe + H2SO4 → FeSO4 + H2] is an example of   double decomposition reaction   synthesis or direct combination reaction   decomposition reaction   simple displacement reaction   Half-n-half Clue   6. Iron + Sulfur → Iron sulfide [Fe + S → FeS] is an example of   double decomposition reaction   simple displacement reaction   decomposition reaction   synthesis or direct combination reaction   Half-n-half Clue   7. Sodium oxide + Water → Sodium hydroxide [Na2O + H2O → 2 NaOH] is an example of   decomposition reaction   simple displacement reaction   synthesis or direct combination reaction   double decomposition reaction   Half-n-half Clue