Volatility (chemistry) vapor pressure chart (right hand side) displays the vapor pressures dependency for a variety of liquids as a function of temperature. For example, at any given temperature, chloromethane (methyl chloride) has the highest vapor pressure of any of the liquids in the chart. It also has the lowest normal boiling point (−24.2 °C), which is where the vapor pressure curve (the blue line) intersects the horizontal pressure line of one atmosphere (atm) of absolute vapor pressure. Volatility (chemistry) In chemistry and physics, volatility is quantified by the tendency of a substance to vaporize. Volatility is directly related to a substance's
Principle (chemistry) Principle (chemistry) Principles - historical concept of the constituents of a substance, specifically those that produce a certain quality or effect in the substance, such as a "bitter principle", which is any one of the numerous compounds having a bitter taste. The idea of chemical principles developed out of the classical elements. Paracelsus identified the "tria prima" as principles in his approach to medicine. Georg Ernst Stahl published "Philosophical Principles of Universal Chemistry" in 1730 as an early effort to distinguish between mixtures and compounds. He writes, "the "simple" are "Principles", or the first material causes of "Mixts";..." To define