endothermic reaction - Hutchinson encyclopedia article about endothermic reaction Printer Friendly
The Free Dictionary
897,940,298 visitors served.
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

endothermic reaction

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.34 sec.

endothermic reaction

Chemical reaction that requires an input of energy in the form of heat for it to proceed; the energy is absorbed from the surroundings by the reactants. A sign that this is happening is if the container holding the reactants feels cold and the temperature of the reactants falls. The energy absorbed is represented by the symbol +ΔH.

The dissolving of sodium chloride in water and the process of photosynthesis are both endothermic changes. In photosynthesis the energy absorbed is in the form of light energy. In an endothermic reaction the energy needed to break the chemical bonds in the reactants is greater than the energy released when bonds are formed in the products. See energy of reaction.
?Page tools
Printer friendly
Cite / link
 Email
Feedback
?Sign in SSL protected
Email:
Password:
Register

? Mentioned in ? References in periodicals archive
 
Endothermic reactions (requiring heat) are accompanied by an increase in enthalpy H.
Elastomers and aging by Hertz, Daniel L. / Rubber World
Flame retardancy is also aided by the endothermic reaction of nitrogenous gas sublimation, resulting in lower combustion temperatures, Akzo says.
New halogenated FRs by Plastics Technology
Figure 1 shows the exothermic combustion enthalpies of proven cable jacket materials and, additionally, the endothermic reaction enthalpy of the decomposition reaction of aluminium hydroxide.
Low smoke, non-corrosive, fire retardant cable jackets based on HNBR ... by Meisenheimer, Herman / Rubber World
More results
 
Hutchinson browser? ? Full browser
 
 
Hutchinson Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2008 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.