Question

What is a chemical reaction?

Answer 1

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

Answer 2

Hey friend!

Well! Chemical reaction can be reffered as "The processes in which new substances with new properties are formed".

Let's consider an example:-

Zinc + Sulphuric acid --> Zinc sulphate + hydrogen

Zn + H2SO4 ----> ZnSO4 + H2

Here Compound Zinc sulphate is formed with new properties! 

___________________________________________________

Hope it helps!

@Ankit1234
#Moderator brainly