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									The Reactivity Series
Reaction of Sodium in Water
Word Equation

Sodium + Water   Sodium Hydroxide + Hydrogen
Reaction of Caesium and Water
Caesium


Caesium + Water   Caesium Hydroxide + Hydrogen
Calcium


Calcium + Water   Calcium Hydroxide + Hydrogen
Reaction of Magnesium and Steam
Magnesium + Steam   Magnesium Oxide + Hydrogen
Reactivity Series

       Cs
       K
       Na
       Ca
       Mg
Reactions of Metals and Oxygen
Reactions of Metals and Oxygen
Equations



   Magnesium + Oxygen   Magnesium Oxide
                    Redox

What has happened to the metal in this reaction ?

             It has gained oxygen


           It has been …………..?


                  OXIDISED

                Because ….
Reaction of Metals and Dilute Acid




                            Magnesium ribbon + hydrochloric acid
Reaction of Metals and Dilute Acid




                            Zinc + hydrochloric acid
 Observations


• Fizzing

• Metal gets smaller

• Heat given out

• Colour of solution formed
  Equations


    Acid   + Metal         Salt + Hydrogen


Hydrochloric + Magnesium   Magnesium + Hydrogen
   Acid                     Chloride
Sulphuric + Magnesium   Magnesium + Hydrogen
  Acid                   Sulphate



 Hydrochloric + Iron      Iron      + Hydrogen
    Acid                 Chloride


    Sulphuric + Zinc      Zinc      + Hydrogen
      Acid               Sulphate
Reactivity Series

       Cs
       K
       Na
       Ca
       Mg
       Zn
Displacement Reactions
Displacement Reactions




                   Magnesium + Lead nitrate
Displacement Reactions




                   Iron + Copper nitrate
Observations

• Colour of metal formed as solid deposit

• Change of colour of solution
N.B. For a reaction to happen the metal on its
     own must be…………………………….




       ………...the MOST reactive of the two.
Example




Zinc    +   Copper                  Zinc + Copper
            Sulphate              Sulphate



• Red / brown deposit of copper

• Blue solution gets paler
             Zinc                 Magnesium
Magnesium +                                 + Zinc
            Sulphate               Sulphate


   Copper +    Silver              Copper + Silver
               Nitrate             Nitrate


 Zinc   + Magnesium                  NO REACTION
            Nitrate

                WHY NO REACTION ?
    Zinc is below magnesium in the reactivity series.
Reactivity Series
       Cs
       K
       Na
       Ca
       Mg
       Zn
       Fe
       Pb
       Cu
       Ag
      Extraction of Metal from its Ore

Ores are the rocks from which we extract metals




E.g. bauxite       aluminium oxide          Al

        What has happened to the metal ?
It has been ……….?                 Reduced
The more reactive
    a metal is

                         The more difficult
                    it is to extract from its ore.
  The metals just below aluminium can be
extracted from their ore by heating them with
      carbon - A REDUCING AGENT

								
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