Answer:
The atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.
Step-by-step explanation:
The chemical reaction is the way in which one substance reacts against another. So, a chemical reaction consists of the transformation of some substances into others, that is, the process of arranging atoms and bonds when chemical substances come into contact.
In a chemical reaction, the initial substances are called reactants, while the new substances obtained are called products.
So, the atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.