Solid materials that dissolve in water are said to be soluble in water.
Solid materials that do not dissolve in water are said to be insoluble in water.
Liquids that dissolve in water are said to be miscible in water.
Liquids that do not dissolve in water are said to be immiscible in water.
Oxygen dissolved in water is essential for the survival of aquatic organisms.
Soft drinks have carbon dioxide dissolved in them.