tap water and nail reaction

1 ANSWERS

1. amomipais82
   

   Hi,
   My original scientific ideas made in my prediction seem to be true. In my prediction I found out that:
   
   Iron rusts when it is in contact with oxygen and water. Rust is iron oxide. The chemical formula for iron oxide is Fe2O3. Rusting is an oxidation reaction. This means a reaction with oxygen to form an oxide. A word equation for rusting is:
   
   iron + oxygen = iron oxide
   
   A balanced symbol reaction for rusting is:
   
   4Fe + 3O2 = 2Fe2O3
   
   Oxidation also means loss of electrons. The iron loses electrons.
   
   An ionic half equation for this reaction is:
   
   Fe (s) = Fe2+ (aq) + 2e-
   
   Water is needed for rusting to occur because the electrons that the iron loses travel through the water. If salt is present, rusting happens quicker because the salt makes the water more conductive. It allows the electrons to travel through the water faster

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