👉 In chemistry, an oxidation state is a charge that is associated with an atom or molecule in a chemical reaction. Oxidizing a substance means it loses electrons to another substance. For example: - In the reaction between hydrogen and oxygen (H2O), the hydrogen atom gains one electron from the oxygen atom. - In the reaction between iron (Fe) and oxygen gas (O2): - Iron loses an electron, giving up its positive charge. - The oxygen gas has gained a positive
