Surface tensión: the inward force, or pull, that tends to minimize the Surface área of a liquid. Surfactant: is any substance that interferes with the hydrogen bonding between wáter molecules and thereby reduces Surface tensión. Aqueous solution: is wáter that contains disolved substances. Solvent: the dissolving médium in a solution. Solute: the disolved particles in a solution. Solvation: the process by which the positive and negative ions of an ionic solid become surronded by solvent molecules. Electrolyte: is a compound that conducts an electric current when it is in an aqueous solution or in the molten state. Nonelectrolyte: is a compound that does not conduct in either an aqueous solution the molten state. Strong electrolyte: all or nearly all of the solute exists as ions.Weak electrolyte: conducts an electric current poorly because only a fraction of the solute in the solution exists as ions. Wáter of hydration: the wáter contained in a cristal.Hydrate: a compound that contains wáter of hydrationAnhydrous: a substance that does not contain wáter. Effloresce: if a hydrate has a vapor pressure higher than the pressure of wáter vapor in the air, the hydrate will lose its wáter of hydration. Hygroscopic: hydrate and other compound that remove moisture from air.Desiccant: is a substance used to absorb moisture from the air and créate a dry atmosphere. Deliquescent: they remove sufficient wáter from the air to dissolve completely and form solutions.Suspensión: is a mixture from which particles settle out upon standing. Colloid: a heterogeneous mixture containing particles that range in size from 1nm to 1000 nm Tyndall effect: the scattering of visible light by coloidal particles.Brownian motion: the chaotic movement of coloidal particles, which was first observed by the Scottish botanist Robert Brown. Emulsion: is a coloidal dispersión of a liquid in a liquid.