Question

how did you find whether the changes are physical or chemical changes

Answer 1

Dear student ,

There are many ways to determine the physical and chemical changes out of all few are as follows :
1. In physical change no new substance is formed while in chemical new substance with different composition from the reactants is formed.
2. In physical change it reversible in nature while in chemical it may be revarsible as well as irreversible in nature .
3.In physical change no change in energy while in chemical energy change takes place
Regards