A soluble compound is a substance that can dissolve in a particular solvent to form a homogeneous solution. In molecular terms, this means that the individual molecules of the compound can break apart and disperse throughout the solvent molecules.
The interaction between the solvent molecules and the solute molecules is strong enough to overcome the forces holding the solute molecules together.
The term "insoluble compound" refers to a chemical compound that does not dissolve appreciably in a particular solvent under specified conditions. Solubility is a property that depends on various factors, including the nature of the solute and solvent, temperature, and pressure.
For example, if a compound is considered insoluble in water, it means that it does not dissolve to a significant extent in water. Common examples of insoluble compounds in water include many metal oxides, hydroxides, and certain salts. Silver chloride (AgCl) and lead(II) sulfate (PbSO4) are examples of insoluble compounds in water.