Experience: 3 years
Changes - reaction.
If during process,
only physical state is change- physical reaction.
molecule changes but atoms not-chemical reaction
atom changes -nuclear reaction.
Chemistry was almost parallel developed with physics. Indo,Greek and Chinese had great knowledge of chemistry.
Lavoiser was father of modern chemistry but great Indian chemist Saige KANADA gave first atomic model and followed by John dolton.
The stability of atom was explained and octet rule was introduced.
You should join my class and joy your chemistry with concepts and logics and get funny moments.