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Endothermic reaction: very, VERY cool.
Endothermic reaction: very, VERY cool.
Published: 2012/01/26
Channel: MrBellScience
What are endothermic and exothermic reactions | Chemistry for All | FuseSchool
What are endothermic and exothermic reactions | Chemistry for All | FuseSchool
Published: 2016/11/08
Channel: FuseSchool - Global Education
Phase Changes: Exothermic or Endothermic?
Phase Changes: Exothermic or Endothermic?
Published: 2012/04/11
Channel: Tyler DeWitt
Endothermic Reaction
Endothermic Reaction
Published: 2007/01/29
Channel: Bob Burk
SchoolFreeware Science Video 13 - Cool Drinks Fast With Endothermic Reactions
SchoolFreeware Science Video 13 - Cool Drinks Fast With Endothermic Reactions
Published: 2013/12/15
Channel: SchoolFreeware
Endothermic - Chem Definition
Endothermic - Chem Definition
Published: 2011/02/23
Channel: Periodic Videos
Baking Soda with Vinegar (Endothermic Reaction)
Baking Soda with Vinegar (Endothermic Reaction)
Published: 2016/04/06
Channel: YAN YI HO
Dissolving Ammonium Nitrate An Endothermic Process
Dissolving Ammonium Nitrate An Endothermic Process
Published: 2009/08/09
Channel: mreisley
Endothermic and Exothermic Reactions Explained - Examples & Graphs
Endothermic and Exothermic Reactions Explained - Examples & Graphs
Published: 2016/07/18
Channel: The Organic Chemistry Tutor
Endergonic, exergonic, exothermic, and endothermic reactions | Khan Academy
Endergonic, exergonic, exothermic, and endothermic reactions | Khan Academy
Published: 2015/08/13
Channel: Khan Academy
Exothermic vs. Endothermic Reactions
Exothermic vs. Endothermic Reactions
Published: 2013/01/08
Channel: Step-by-Step Science
Endothermic and Exothermic Reactions
Endothermic and Exothermic Reactions
Published: 2013/09/25
Channel: Bozeman Science
An endothermic reaction
An endothermic reaction
Published: 2011/01/30
Channel: Augustus
Chemical Ice Pack/ Endothermic Quick Freeze
Chemical Ice Pack/ Endothermic Quick Freeze
Published: 2008/12/04
Channel: Sully Science
Exothermic and Endothermic Reactions - Video for kids
Exothermic and Endothermic Reactions - Video for kids
Published: 2013/05/20
Channel: makemegenius
Christmas Science | It’s feeling cold | The endothermic reaction
Christmas Science | It’s feeling cold | The endothermic reaction
Published: 2015/11/16
Channel: STEM Learning
exothermic and endothermic reaction demonstrations
exothermic and endothermic reaction demonstrations
Published: 2014/12/08
Channel: Mr. Kish's Science Channel
Endothermic vs Exothermic Processes - Explained
Endothermic vs Exothermic Processes - Explained
Published: 2016/02/04
Channel: Chem Academy
Endothermic Vs. Exothermic Reaction Graphs
Endothermic Vs. Exothermic Reaction Graphs
Published: 2015/10/13
Channel: mrscolosia
simple endothermic reaction
simple endothermic reaction
Published: 2015/11/19
Channel: Mr. Kish's Science Channel
The Sci Guys: Science at Home - SE1 - EP7: Hot Ice - Exothermic Reactions and Supercooled solutions
The Sci Guys: Science at Home - SE1 - EP7: Hot Ice - Exothermic Reactions and Supercooled solutions
Published: 2013/04/04
Channel: The Sci Guys
Chilling Endothermic Reaction
Chilling Endothermic Reaction
Published: 2016/12/19
Channel: mopatin
GCSE Chemistry (9-1) Exothermic and Endothermic reactions
GCSE Chemistry (9-1) Exothermic and Endothermic reactions
Published: 2017/03/07
Channel: Freesciencelessons
Cool Demo - Endothermic reaction
Cool Demo - Endothermic reaction
Published: 2013/10/01
Channel: MrGrodskiChemistry
Dissolving of NH4Cl: An Endothermic Process
Dissolving of NH4Cl: An Endothermic Process
Published: 2011/12/08
Channel: NCSSMDistanceEd
Thermochemical Equations Practice Problems
Thermochemical Equations Practice Problems
Published: 2012/04/15
Channel: Tyler DeWitt
Chem121 Endothermic Exothermic Reactions 6 9
Chem121 Endothermic Exothermic Reactions 6 9
Published: 2013/02/07
Channel: Amy Cully
Exothermic and endothermic dissolution | Solubility | Chemistry
Exothermic and endothermic dissolution | Solubility | Chemistry
Published: 2015/07/01
Channel: KClassScienceChannel
10 Examples of Endothermic Reactions in Everyday Life : Physics Concepts
10 Examples of Endothermic Reactions in Everyday Life : Physics Concepts
Published: 2014/02/19
Channel: eHowEducation
Exothermic and endothermic reaction
Exothermic and endothermic reaction
Published: 2011/05/31
Channel: smartschoolonline
What does one mean by exothermic and endothermic reactions Give examples
What does one mean by exothermic and endothermic reactions Give examples
Published: 2015/05/14
Channel: Ncert Solutions CBSE ncerthelp.com
Spontaneous endothermic reaction
Spontaneous endothermic reaction
Published: 2015/06/03
Channel: Random Experiments International
Energy & Chemistry: Crash Course Chemistry #17
Energy & Chemistry: Crash Course Chemistry #17
Published: 2013/06/11
Channel: CrashCourse
Endothermic Reaction.
Endothermic Reaction.
Published: 2015/03/30
Channel: Science and Maths by Primrose Kitten
Tricky Question: Exothermic or Endothermic?
Tricky Question: Exothermic or Endothermic?
Published: 2012/04/13
Channel: Tyler DeWitt
Potential Energy Diagrams - Chemistry - Catalyst, Endothermic & Exothermic Reactions
Potential Energy Diagrams - Chemistry - Catalyst, Endothermic & Exothermic Reactions
Published: 2016/07/14
Channel: The Organic Chemistry Tutor
Baking soda & Citric Acid Endothermic Reaction
Baking soda & Citric Acid Endothermic Reaction
Published: 2016/02/08
Channel: J&L Co.
Endothermic Reaction using NH4NO3 and water
Endothermic Reaction using NH4NO3 and water
Published: 2009/04/27
Channel: diamondog06
CHEMISTRY LAB EXPERIMENT  - EXOTHERMIC & ENDOTHERMIC REACTIONS
CHEMISTRY LAB EXPERIMENT - EXOTHERMIC & ENDOTHERMIC REACTIONS
Published: 2015/12/12
Channel: NCERT OFFICIAL
Endothermic Reactions (TELUGU)
Endothermic Reactions (TELUGU)
Published: 2013/02/11
Channel: Agastya International Foundation
Chem Demo - Endothermic Reaction
Chem Demo - Endothermic Reaction
Published: 2014/04/29
Channel: DeadlyLaugh
Heat Flow Animation (Endothermic and Exothermic)
Heat Flow Animation (Endothermic and Exothermic)
Published: 2015/10/15
Channel: Brandon Cruickshank
Endothermic and Exothermic Reactions
Endothermic and Exothermic Reactions
Published: 2012/12/22
Channel: ScienceBang
Endothermic and Exothermic Reactions | Hindi
Endothermic and Exothermic Reactions | Hindi
Published: 2017/09/20
Channel: Learn India Learn
Endothermic or exothermic chemical equation
Endothermic or exothermic chemical equation
Published: 2016/11/07
Channel: Brad Kresge
5.3 Exothermic, Endothermic, Delta H Energy Profiles [SL IB Chemistry]
5.3 Exothermic, Endothermic, Delta H Energy Profiles [SL IB Chemistry]
Published: 2011/01/31
Channel: Richard Thornley
Endothermic Reaction
Endothermic Reaction
Published: 2014/11/06
Channel: Azat Ovezov
Chilling effects – a spontaneous endothermic demonstration
Chilling effects – a spontaneous endothermic demonstration
Published: 2016/10/13
Channel: Royal Society of Chemistry
Endothermic Reactions in Urdu   Sabaq Foundation 182
Endothermic Reactions in Urdu Sabaq Foundation 182
Published: 2016/09/03
Channel: Learning Paradise
Photosynthesis exo endothermic
Photosynthesis exo endothermic
Published: 2014/11/18
Channel: P Whiting
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WIKIPEDIA ARTICLE

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The term endothermic process describes a process or reaction in which the system absorbs energy from its surroundings; usually, but not always, in the form of heat. The term was coined by Marcellin Berthelot from the Greek roots endo-, derived from the word "endon" (ἔνδον) meaning "within" and the root "therm" (θερμ-) meaning "hot." The intended sense is that of a reaction that depends on absorbing heat if it is to proceed. The opposite of an endothermic process is an exothermic process, one that releases, "gives out" energy in the form of heat. Thus in each term (endothermic & exothermic) the prefix refers to where heat goes as the reaction occurs, though in reality it only refers to where the energy goes, without necessarily being in the form of heat.

The concept is frequently applied in physical sciences to, for example, chemical reactions, where thermal energy (heat) is converted to chemical bond energy.

Endothermic (and exothermic) analysis only accounts for the enthalpy change (∆H) of a reaction. The full energy analysis of a reaction is the Gibbs free energy (∆G), which includes an entropy (∆S) and temperature term in addition to the enthalpy. A reaction will be a spontaneous process at a certain temperature if the products have a lower Gibbs free energy (an exergonic reaction) even if the enthalpy of the products is higher. Entropy and enthalpy are different terms, so the change in entropic energy can overcome an opposite change in enthalpic energy and make an endothermic reaction favorable.

Examples[edit]

References[edit]

  1. ^ Austin, Patrick (January 1996). "Tritium: The environmental, health, budgetary, and strategic effects of the Department of Energy's decision to produce tritium". Institute for Energy and Environmental Research. Retrieved 2010-09-15. 
  2. ^ Qian, Y.-Z.; Vogel, P.; Wasserburg, G. J. (1998). "Diverse Supernova Sources for the r-Process". Astrophysical Journal 494 (1): 285–296. arXiv:astro-ph/9706120. Bibcode1998ApJ...494..285Q. doi:10.1086/305198.

External links[edit]

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