2. After completing this topic you should be able to :

3. If a reaction takes place the surface of the metal changes colour.

4. METAL SOLUTION MgSO 4 (aq) ZnSO 4 (aq) CuSO 4 (aq) AgNO 3 (aq) Mg 2+ (aq) Zn 2+ (aq) Cu 2+ (aq) Ag + (aq) METAL ION Mg ZnCu = = reaction  = no reaction       FORMULA

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6. DICTIONARY - DISPLACEMENT REACTION When a metal pushes another metal out of a solution and takes its place in the solution, we call this a DISPLACEMENT REACTION. The electrochemical series can be used to predict when a displacement reaction will take place. ELECTROCHEMICAL SERIES RULE 2 A metal will displace another metal which is LOWER DOWN the ELECTROCHEMICAL SERIES from its solution.

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