Is the protonolysis reaction of sulfuric acid in aqueous solution an example of chemical change?
My word it is. Consider the reaction of sulfuric acid with water:
Bonds are broken, new substances are formed; ergo , this is chemical change.
The ionization of sulfuric acid is quite clearly a chemical change in that it involves the making and breaking of chemical bonds and the formation of new substances. Three new substances result upon ionization: (i) the hydronium ion; (ii) the bisulfate ion; and (iii) the sulfate dianion.