Chemical Reaction or Mixture?

Jul 2017
Temple Tx
Not sure how to begin or steps to take to answer:

When combining a known preservative/inhibitor of bacterial growth, with a known antimicrobial agent that is an oxidizer, will a chemical reaction occur or is it simply a mixture?

Preservative: Methyl chloro isothiazolinone (C4H4ClNOS)
Oxidizer: Sodium dichlor isocyanurate (C3Cl2N3NaO3)