Answer:
Solution - In chemistry, a solution is a homogeneous mixture of two or more substances in relative amounts that can be changed continuously up to the solubility limit. The term "solution" is most commonly associated with the liquid state of matter, but gases and solids can also form solutions. For example, air is a solution made up primarily of oxygen and nitrogen with trace amounts of several other gases, while brass is a solution made up of copper and zinc.Soluble - The amount of a substance that dissolves in a solvent to form a solution is known as solubility (usually expressed as grams of solute per litre of solvent). Complete (totally miscible; e.g., methanol and water) or partial solubility of one fluid (liquid or gas) in another (oil and water dissolve only slightly). "Like dissolves like" is a principle that applies to most situations (e.g., aromatic hydrocarbons dissolve in each other but not in water). The distribution coefficient (the ratio of a material's solubilities in two solvents) is used in some separation methods (absorption, extraction). Solids' solubilities in liquids generally increase with temperature, while gases' solubilities decrease with temperature.
