Question

define a chemical reaction. explain, some easily observable changes or features that can characterize a chemical reaction.​

Answer 1

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

(or)

a 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.

You can choose anyone defination both are same meaning.......

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