there are several aromatic compounds with the formula c8h9cl. draw those that have a disubstituted ring where the chlorine is attached to the ring.

Exothermic,  physical change after it is already baked

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).