Le Chatelier's Principle: The principle that states if a system in equilibrium is disturbed by changes in determining factors, such as temperature, pressure, or concentration of components, the system will shift its equilibrium position so as to counteract the effect of the disturbance.
Precipitation Reaction: A reaction where an insoluble solid (precipitate) forms from two aqueous solutions.
Ionic Compound: A compound composed of positive and negative ions.