Redox

• What can oxidation be?

  loss of electrons

  increase in oxidation number

  gain of O2
• What can reduction be?

  gain of electrons

  decrease in oxidation number

  gain of H+
• What is an oxidising agent?


  accepts electrons and gets reduced
• What is a reducing agent?


  donates electrons and gets oxidised
• what is the Oxidation number of an element?

  ZERO
• What is disproportionation?


  atoms of the same element are both oxidised and reduced