A dilute solution is a mixture where a small amount of solute is dissolved in a large amount of solvent. The solute is the substance being dissolved, while the solvent is the substance that does the dissolving. For example, when you add a teaspoon of sugar to a glass of water, you create a dilute solution of sugar in water. In a dilute solution, the concentration of the solute is low, meaning that there are fewer solute particles compared to the solvent. This concept is important in various fields, including chemistry and biology, as it affects reactions and processes involving substances like salts, acids, and gases.