Freezing point depression is a phenomenon where the freezing point of a liquid is lowered when a solute is added. This occurs because the solute particles disrupt the formation of the solid structure of the liquid, making it harder for the liquid to freeze. Common examples include adding salt to water, which lowers the freezing point and helps melt ice on roads. This concept is important in various applications, such as in the use of antifreeze in car radiators and in the preparation of ice cream. Understanding freezing point depression helps in designing effective solutions for temperature control in different environments.