section_path: Abstract
section_name: Abstract
paragraph_text: Redox (/ ˈ r ɛ d ɒ k s / RED -oks, / ˈ r iː d ɒ k s / REE -doks, reduction–oxidation or oxidation–reduction) is a type of chemical reaction in which the oxidation states of the reactants change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a decrease in the oxidation state. The oxidation and reduction processes occur simultaneously in the chemical reaction.
  
  There are two classes of redox reactions: