Question

What happens to the reactants when a chemical reaction takes place?

Answer 1

Hint : A chemical reaction occurs when one or more compounds, referred to as reactants, are converted into one or more other substances, referred to as products. A chemical reaction rearranges the constituent atoms of the reactants to produce various products.

Complete Step By Step Answer:
A physical transition, such as changing states or dissolving, does not result in the formation of a new substance; however, a chemical change does. The atoms and molecules that interact in a chemical reaction are referred to as reactants.
The atoms and molecules formed by a chemical reaction are referred to as products. Just the atoms found in the reactants will end up in the products of a chemical reaction. There are no new atoms formed, and there are no atoms lost.
Reactants come into contact with each other, bonds between atoms in the reactants are broken, to atoms rearrange and form new bonds to form the components in a chemical reaction.
Let us consider a reaction
$A + B \to AB$
Where, A and B are the reactants and AB is the product .
We can see that the parts of A and B would be separated to form AB in order for the reaction to take place. This means that the reactants were used up to create a product.

Note :
Chemical processes improve our understanding of matter's properties. We can learn about a sample's chemical properties by looking at how it deals with other matter. These characteristics may be used to classify an unknown species or predict how various types of matter will interact.