Security Stud. 1  Full mortise hinges are available with security studs for added safety. 2  With the door in its closed position, a stud attached to one leaf of the hinge projects into a hole in the matching leaf.
Net Ionic Equation. A chemical reaction involves the conversion of reactant atoms or molecules to product. During any chemical reaction, reactant molecules are joined together to form a product which has different chemical and physical properties than the reactants.
An ionic compound in chemistry refers to any chemical compound in which ions are held together, or bound, through ionic bonds. Ionic bonds, by definition, are electrostatic attractions between two ions with an opposite charge. In other words, an ionic bond can only form between a cation and an anion. Although there is no limit to the number of ions contained in an ionic compound, in order for the compound to remain whole, the net charge needs to equal zero.