Freeze-drying - Water can be sublimated in a food product by using a vacuum.

Example of gas to solid solution. Hence Hydrogen gas adsorbed on the surface of platinum is an example of gas in solid solution. Example of deposition that occurs naturally is when a water vapor that turns into a solid snowflake. Hence Hydrogen gas adsorbed on the surface of platinum is an example of gas in solid solution.

Carbon dioxide in water. Hydrogen is a gas at STP and platinum is solid. Solid carbon dioxide in fire extinguisher.

The process of this changing of state may occur naturally or even synthetically. Mercury in silver and tin dental amalgam. An example of a liquid-liquid solution.

The word solution is used to describe the intimate mixing of components at the atomic level and distinguishes these homogeneous materials from physical mixtures of components. Such cases constitute true solutions and they resemble the solution of gas in liquid closely. Hydrogen gas on platinum.

Hydrogen is a gas at STP and platinum is solid. Solutions of ammonia and sulphur dioxide on charcoal are examples of such cases. Air is comprised of multiple gasesAbout 78 percent of air is nitrogen so this element is classified as the solvent.

Many examples can be found in metallurgy geology and solid-state chemistry. This process is called deposition. Zinc in copper brass alloy liquid.