General Reactions

• Oxides


  Substance + Oxygen -> Oxides.

  E.G:

  2Mg + O2 -> 2 MgO
• metal + water -> metal hydroxide + hydrogen

  E.g: 2Na + 2 H20 -> 2NaOH + H2.
• metal + acid -> salt + hydrogen

  EG Mg + 2 HCl -> MgCl2 + H2
• metal carbonate -> metal oxide + carbon dioxide (on heating)

  E.G CaCO3 -> CaO + CO2
• ammonia + acid -> ammonium salt

  E.G: NH3 + HCl -> NH4Cl
• hydrogencarbonate + acid -> salt + water + carbon dioxide

  E.G: KHCO3 + HCl -> KCl + H2O + CO2
• carbonate + acid -> salt + water + carbon dioxide

  CuCO3 + 2 HCl -> CuCl2 + H2O + CO2
• hydroxide + acid -> salt + water

  E.G 2 NaOH + H2SO4 -> Na2SO4 + H2O
• oxide + acid -> salt + water

  E.G MgO + 2 HNO3 ->Mg(NO3)2 + H2O