You can tell the difference between physical and chemical change by looking at the change that takes place like whether it is a permanent or temporary change.
Explanation:
physical change is temporary change and chemical change is permanent change
the original shape of the object can be restored in physical change whereas the original composition of the object will be lost in chemical change
in physical change the change is reversible whereas he chemical change is irreversible and the object takes new shape and position in this change.
