Positioned as the de facto standard for next-generation flame-retardant PBT resin, the product complies with the world safety and environmental standards, employing a non-halogen flame retardant to achieve the highest V0 retardant level set by the Underwiters Laboratories.
2. EXPERT ANSWER. Evaporation is an endothermic process. The reaction in which heat is absorbed by the system is known as endothermic reaction. In evaporation heat is absorbed and passed to the water which forms vapor when heated. Posted by Krishnakoli Datta on 30/5/13.
In order to condense water vapor to water, the molecules must lose energy. Chemistry at About.com states that most exothermic reactions, unlike phase changes, result in higher entropy in the products. An example of an exothermic reaction that is not a phase change is combustion. After wood burns, the result is much less ordered than the reactants that went into the reaction, according to Scientific American.