Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Endothermic

Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_517-3

Definition

An endothermic reaction is a physical transformation which requires an energy supply if it takes place at constant volume or which requires an enthalpy supply if it takes place at constant pressure. A familiar endothermic physical transformation is the evaporation of water. The enthalpy change (ΔH) or the energy change (ΔU) during an endothermic reaction or transformation is positive by definition.

See Also

Keywords

Bioorganic Chemistry Constant Pressure Energy Supply Energy Change Constant Volume 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Université Libre de BruxellesBrusselsBelgium