The term for the physical or chemical component of a solution is called a solute. In a solution, the solute is the substance that is dissolved in a solvent, which is usually a liquid. The concentration of the solute can significantly impact the solution's properties, including chemical reactivity, boiling point, and freezing point. Solutes play essential roles in various biological, chemical, and industrial processes, highlighting their importance in fields such as chemistry, biochemistry, and pharmacology.