Chemistry (types of reactions)

• metal and oxygen gas reaction

  metal + oxide --> metal oxide
• metal and water reaction

  metal + water --> metal hydroxide + H2 g
• metal and dilute acid reaction

  metal + dilute acid --> salt + h2
• Decomposition

  heating (thermolysis)
• Decomposition

  (electrolysis) passing a current through the liquid
• Decomposition

  (photolysis) exposing to light
• Decomposition (salt)

  decomposes to form metal and non-metal
• Decomposition (carbonates)

  decomposes to give an (metal) oxide and carbon dioxide
• decomposition (nitrates)

  decomposes to give (metal) oxide, oxygen gas and nitrogen dioxide gas. EXCEPTION
• decomposition nitrate (silver and mercury) EXCEPTION

  decomposes to give metal, oxygen gas and nitrogen dioxide gas.
• decomposition (oxides)

  decompose to give metal and oxygen
• decomposition (metal hydroxide)

  decomposes to form metal oxide and water
• decomposition (acid)

  decomposes to form non-metal oxide and water
• combustion reaction (complete)


  fuel + oxidant (eg oxygen) --> carbon dioxide + water
• combustion (incomplete)


  carbon monoxide, soot (carbon solid), water
• metal and steam reaction

  metal + steam --> metal oxide + h2 gas
• temperature 


  an increase in temperature would increase the average kinetic energy of reactant molecules, thus increasing the collisional frequency.
• temperature


  at a high temperature, a greater proportion of reactant molecules have energy higher than the activation energy, thus increasing the probability of a successful collision, and increasing the reaction rate