Question

in addition to formation of new substances,what all changes are observed during a chemical change. give one example of each type of change ​

Answer 1

change in color=Fe in CuSo4 solution

heat releases or absorbed=CaCo3 on heating gives CaO+Co2(it is also an example of temperature changes)

physical properties change=slaked lime on rxn with Co2 gives CaCo3 +H2O which is different in physical properties

basically above all rxn changes it's physical properties

hope it is clear for u frnd