Question

won't there be another characteristic of chemical changes ie. fromation of precipitate?

OR

is the formation of precipitate a characteristic of chemical change

Answer 1

Formation of precipitate may or may not be characteristic of chemical change as:

i. In certain chemical reactions, precipitates are not formed but it does not mean that there was no chemical change

ii. Change in temperature and pressure can result in precipitation in a solution which does not indicate chemical change.