Hypothetical chemical compound heat of formation ... can be used to determine whether a hypothetical compound is stable." However, "a negative formation enthalpy does not automatically imply the existence of a hypothetical compound." The method predicts that NaCl is stable but NeCl is not. It predicted XePtF based on the stability of OPtF. Hypothetical chemical compound A hypothetical chemical compound is a chemical compound that has been conceived of, but is not known to have been synthesized, observed, or isolated (identified or shown to exist). Some hypothetical compounds cannot form at all. Others might turn out to be highly unstable, decomposing, isomerizing, polymerizing,
Cutting compound eventually strip all the paint from the surface, which both is less appealing and offers less chemical resistance. Waxing to protect the newly exposed surface is an important part of maintenance. Cutting compound Cutting compound consists of an abrasive suspended in a paste. Like most abrasives, it comes in various grit sizes dependent upon how much matter is to be removed. It is used on automotive paintwork to cut through (abrade) oxidised paint or to polish out scratches in the paintwork. The oxidised paint is duller than fresh paint and the cutting compound is used to expose this fresher surface.