The scientific models are the simplified visual representations of the complex studied systems of nature.
The scientific models could be 2 dimensional or 3 dimensional which plays an important role in scientific studies as they are used by the researchers to prove the validity of their hypothesis if they can be proved or disproved.
They are used by the scientists to explain the complex models to the layman in simple language which helps them able to understand the complex models.
Since the models are used to explain the complex systems which has been discovered therefore Option-C is the correct answer.
<span>Bonds of reactants are broken and create new bonds to form different products and produces exothermic and endothermic reactions. You are able to see a chemical reaction occur through a few signs hope this helps
The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.
