Respuesta :
In a chemical change, the molecular structure of a substance changes. I think this is right. I hope this helps.
Answer: In a chemical change, the molecular structure of the substance changes.
Explanation:
Chemical change is the change in which chemical composition of the substance changes by rearrangement of atoms. The molecular structure changes due to change in atoms.
Example: [tex]H_2+O_2\rightarrow 2H_2O[/tex]
Physical change is a change in which only the physical properties such as size, shape etc change and there is no rearrangement of atoms.
Example: melting of ice
[tex]H_2O(s)\rightarrow H_2O(l)[/tex]