Gaseous Solution: Air is a common example of a gaseous solution. It is a mixture of gases, primarily nitrogen (about 78%) and oxygen (about 21%), with trace amounts of other gases like carbon dioxide and argon.
Liquid Solution: Saltwater is a typical example of a liquid solution. It is made by dissolving salt (sodium chloride) in water. The salt is the solute, and the water is the solvent.
Solid Solution: Brass is an example of a solid solution. It is an alloy made by combining copper and zinc. In this case, copper is the solvent, and zinc is the solute.