Metals and Non- Metals / part III / reactivity Series of metals and Extraction of metals from their ores
*Reactivity Series :- Reactivity series of metals The Arrangement of elements according to their reactivity is called reactivity series. * Reaction Of Metals with water. Metal react with water to form metal hydroxide and hydrogen gas is released Metal +water ------->metal hydroxide +hydrogen gas Na (s) + cold H2O (l) ------------>NaOH (aq)+H2(g) K (s) + cold H2O (l) ---------> KOH (aq) + H2 (g) Note:- Some Metals react with cold water: Sodium and Potassium are the metals which reacts with cold water. * Metals reacts with hot water Some Metals react with hot water: Calcium and Magnesium are the metals which reacts with hot water. Ca (s) + hot H2O (l) --------> Ca(OH)2 (aq) Mg(s) + hot H20 (l) ----------> Mg(OH)2 (aq) Note:- Some react with steam:Metals like Iron, Zinc and Aluminium react with steam *when iron reacts with steam : Fe (s)+steam H2O(l)--------->Fe3O4(s) + H2 (g) Some elements don't reacts:- Elements bel...