Definition: Unsolidified is a term used in the field of chemistry to describe a solid substance that has not been completely dissolved into a liquid. This can occur due to various reasons such as temperature, pressure, or the presence of impurities. In the context of chemical reactions and processes, unsolidified substances are often encountered when attempting to react with liquids, gases, or other substances in a manner that results in an undesired reaction. These substances may be difficult to dissolve into liquid form due to their