Question

difference between physical and chemical change.

Answer 1

Hey


The differences between physical and chemical change are :-


>> Physical change :- The type of change in which any substance undergoes a change in it's physical property , like as state , shape , size and many more .


but ,


Chemical change :- The type of change in which an object undergoes change in it's chemical property .



>> Physical change :- The change which can be reversed and the reactants can be obtained from the products .

Eg :- Melting of ice . we can again freeze it to form ice .


But ,


Chemical change :- The change which is irreversible , i. e which can't be reversed . Once reaction is done then the reactants can't be obtained by the products obtained so .

Eg :- Burning of coal . Once coal burnt and formed ashes then we can't get coal again .



thanks :)

Answer 2

The difference between physical change and chemical change are :

 Physical Change:
a) Reversible
b)No new substances are formed 
eg : tearing of papers

Chemical Changes :
a)Irreversible
b) New substances are formed
eg : burning of paper