An oxidized species is a molecule, atom or ion that has lost electrons during a chemical reaction, thereby increasing its oxidation state.
Reduction: The gain of electrons by a molecule, atom or ion.
A measure of the degree of oxidation of an atom in a substance. It's kind of like counting how many chips have been given away at the party!
A type of chemical reaction that involves a transfer of electrons between two species. It's like trading snacks at the party!