Oxi. And Red.

• OIL RIG: Oxidation Is Loss Reduction Is
• Oxidation


  The loss of electrons
• Reduction


  The gain of electrons
• Oxidation numbers


  The charge an atom has or appears to have when electrons are distributed according to certain Rules
• Oxidising agent


  Brings about Oxidation in another Substance. It itself is reduced.
• Reducing agent


  Brings about Reduction in another substance. It itself is oxidised.
• The oxidation number of an element is the charge that it would have if all its bonds were ionic
• In redox reactions, one reactant loses electrons while the other gains them.
• An electron transfer occurs during a redox rxn.
• The electrochemical series are arranged in order of tendancy to be oxidised.
• The electrochemical series elements are: potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, lead, hydrogen, copper, silver, gold and platinum.
• F is the most electronegative element. It is always -1.
• Rules of oxidation numbers:

  •free elements = 0

  •Oxidation number = charge

  •Hydrogen = +1

  •Oxygen = -2

  •Halogens = -1
• If there's no change in oxidation state then there's no reaction.