human
What occurs during an oxidation-reduction reaction, and provide an example.
gpt
Oxidation-reduction reaction occurs through the transfer of electrons, and both oxidation and reduction must occur together; this reaction type is seen in a change in oxidation number, as shown in the example: Zn (s) + 2HCl (aq) → ZnCl2 (aq) + H2 (g).
Explanation: Oxidation-reduction reactions involve the transfer of electrons and can be seen in various types of reactions, including single replacement reactions, such as the provided example where Zn is oxidized and H+ is reduced.