A redox (or oxidation-reduction) reaction is a type of
chemical reaction that involves a transfer of electrons between two species in
which the oxidation states of atoms are changed . Redox reactions are
everywhere! Your body uses redox reactions to convert food and oxygen to energy
plus water and co2. Redox reactions are characterized by the transfer of
electrons between chemical species, by one
species (the reducing agent) undergoing oxidation (losing electrons) when
another species (the oxidizing agent) undergoes reduction. Oxidation is the
loss of electrons or an increase in the oxidation state of an atom by a molecule,
an ion, another atom. Reduction is the gain of electrons or a decrease in the
oxidation state of an atom by a molecule, an ion, another atom. the combustion
of wood, electrons are transferred from carbon atoms in the wood to oxygen
atoms in the air. The oxygen atoms undergo reduction, gaining electrons, while
the carbon atoms undergo oxidation, losing electrons. Thus oxygen is the
oxidizing agent and carbon the reducing agent in this reaction.
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