Balance the chemical equations ⚖️ and determine the numbers of the different atoms ⚛️ present in the reactants and products.

• Chemical equation 1 ⚗️
  Iron oxidation ⚙️
  Word equation:
  
  Iron + Dioxygen → Magnetic iron oxide
  Chemical equation:
  
  Fe + O₂ → Fe₃O₄

  Reactants	Products
  Fe →	Fe →  ?
  O →	O →  ?

• Chemical equation 2 ⚗️
  Iron oxidation ⚙️
  Word equation:
  
  Iron + Dioxygen → Iron(III) oxide
  Chemical equation:
  
  Fe + O₂ → Fe₂O₃

  Reactants	Products
  Fe →	Fe →  ?
  O →	O →  ?

• Chemical equation 3 ⚗️
  Iron oxidation ⚙️
  Word equation:
  
  Iron + Dioxygen → Iron(II) oxide
  Chemical equation:
  
  Fe + O₂ → FeO

  Reactants	Products
  Fe →	Fe →  ?
  O →	O →  ?

• Chemical equation 4 ⚗️
  Oxidation of iron(II) oxide ⚙️
  Word equation:
  
  Iron(II) oxide + Dioxygen → Iron(III) oxide
  Chemical equation:
  
  FeO + O₂ → Fe₂O₃

  Reactants	Products
  Fe →	Fe →  ?
  O →	O →  ?

📊 RESULT: