Question

What do mean by Chemical reaction?​

Answer 1

Here is your answer:

process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

Answer 2

A chemical change that occurs when two or more substances combine to form a new substance is called chemical reaction.

Chemical reactions must be distinguished from physical changes. Physical changes include changes of state, such as ice melting to water and water evaporating to vapour. If a physical change occurs, the physical properties of a substance will change, but its chemical identity will remain the same.

Hope u like the ans.. Plse Mark me as brainlist