Question

How does a chemical reaction differ from a physical change of state?

Answer 1

a chemical reaction involves different elements or compounds which react to form a product. While physical change is that which can be easily reversed and no new substance can be formed

Explanation:

this is the difference between physical and chemical change
It can also be explained from their names

Answer 2

Chemical change is characterized by the formation of new substances, and the making and breaking of strong chemical bonds.

Explanation:

On the other hand, changes of state, EXCLUDE the formation of new substances, and chemical bonds are largely retained. Both chemical and physical change can be reversible, so reversibility is not a criterion to differentiate....