Water-soluble compounds are substances that can dissolve in water, forming a solution. This means that when these compounds are mixed with water, they break apart into smaller particles, allowing them to spread evenly throughout the liquid. Common examples include table salt and sugar, which easily dissolve in water, making them useful in cooking and food preparation. These compounds are important in many biological processes. For instance, nutrients like vitamins and minerals are often water-soluble, allowing them to be transported in the bloodstream to cells throughout the body. This solubility is crucial for maintaining health and supporting various bodily functions.