In a chemical reaction, substances that undergo transformation are termed reactants and products. Reactants initiate the reaction, and products are the resulting substances. Together, they constitute the chemical species involved in the rearrangement of atoms during the reaction.
In a chemical reaction, the substances that participate and undergo transformation are called "reactants" and "products." Reactants are the starting materials that react with each other, leading to chemical changes. Products, on the other hand, are the substances formed as a result of the chemical reaction. Reactants and products are collectively referred to as "chemical species" or "chemical substances."
Chemical reactions involve the breaking and forming of chemical bonds between atoms, resulting in the rearrangement of atoms to create new substances. The reactants provide the atoms that will be rearranged, and the products are the new combinations of these atoms. The conservation of mass principle ensures that the total mass of the reactants equals the total mass of the products, highlighting the fundamental idea that atoms are neither created nor destroyed in a chemical reaction.