Share
VIDEOS 1 TO 50
Phase Changes: Exothermic or Endothermic?
Phase Changes: Exothermic or Endothermic?
Published: 2012/04/11
Channel: Tyler DeWitt
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
Endothermic reaction: very, VERY cool.
Endothermic reaction: very, VERY cool.
Published: 2012/01/26
Channel: MrBellScience
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
Endothermic - Chem Definition
Endothermic - Chem Definition
Published: 2011/02/23
Channel: Periodic Videos
Endothermic Reaction
Endothermic Reaction
Published: 2011/06/27
Channel: trackerchem
Tricky Question: Exothermic or Endothermic?
Tricky Question: Exothermic or Endothermic?
Published: 2012/04/13
Channel: Tyler DeWitt
Endothermic vs Exothermic Processes - Explained
Endothermic vs Exothermic Processes - Explained
Published: 2016/02/04
Channel: Chem Academy
Endothermic Reaction - two solids
Endothermic Reaction - two solids
Published: 2012/05/19
Channel: chemed
Dissolving Ammonium Nitrate An Endothermic Process
Dissolving Ammonium Nitrate An Endothermic Process
Published: 2009/08/09
Channel: mreisley
Exothermic and Endothermic Reactions - Video for kids
Exothermic and Endothermic Reactions - Video for kids
Published: 2013/05/20
Channel: makemegenius
An endothermic reaction
An endothermic reaction
Published: 2011/01/30
Channel: Augustus
exothermic and endothermic reaction demonstrations
exothermic and endothermic reaction demonstrations
Published: 2014/12/08
Channel: Mr. Kish's Science Channel
Energy & Chemistry: Crash Course Chemistry #17
Energy & Chemistry: Crash Course Chemistry #17
Published: 2013/06/11
Channel: CrashCourse
Endothermic and Exothermic Reactions Explained - Examples & Graphs
Endothermic and Exothermic Reactions Explained - Examples & Graphs
Published: 2016/07/18
Channel: The Organic Chemistry Tutor
Cool Science - Endothermic and Exothermic Experiment
Cool Science - Endothermic and Exothermic Experiment
Published: 2016/12/28
Channel: Quantum Laser Pointers
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
Endothermic Vs. Exothermic Reaction Graphs
Endothermic Vs. Exothermic Reaction Graphs
Published: 2015/10/13
Channel: mrscolosia
Endergonic, exergonic, exothermic, and endothermic reactions | Khan Academy
Endergonic, exergonic, exothermic, and endothermic reactions | Khan Academy
Published: 2015/08/13
Channel: Khan Academy
GCSE Chemistry (9-1) Exothermic and Endothermic reactions
GCSE Chemistry (9-1) Exothermic and Endothermic reactions
Published: 2017/03/07
Channel: Freesciencelessons
simple endothermic reaction
simple endothermic reaction
Published: 2015/11/19
Channel: Mr. Kish's Science Channel
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
How to work out if a reaction is exothermic or endothermic from Bon energies
How to work out if a reaction is exothermic or endothermic from Bon energies
Published: 2013/11/06
Channel: Stan Fowler
Exothermic and endothermic dissolution | Solubility | Chemistry
Exothermic and endothermic dissolution | Solubility | Chemistry
Published: 2015/07/01
Channel: KClassScienceChannel
Dissolving of NH4Cl: An Endothermic Process
Dissolving of NH4Cl: An Endothermic Process
Published: 2011/12/08
Channel: NCSSMDistanceEd
Sublimation & Endothermic Processes : Lessons in Physics & Chemistry
Sublimation & Endothermic Processes : Lessons in Physics & Chemistry
Published: 2014/03/15
Channel: eHowEducation
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
Baking Soda with Vinegar (Endothermic Reaction)
Baking Soda with Vinegar (Endothermic Reaction)
Published: 2016/04/06
Channel: YAN YI HO
Le Chatelier Temperature
Le Chatelier Temperature
Published: 2015/02/27
Channel: MrSoxChemistry
Exothermic vs Endothermic
Exothermic vs Endothermic
Published: 2011/04/02
Channel: Ben's Chem Videos
Endothermic and Exothermic Reactions
Endothermic and Exothermic Reactions
Published: 2012/12/22
Channel: ScienceBang
AQA Unit 2 Chemistry.  Energy Lesson 1 Exothermic and endothermic reactions
AQA Unit 2 Chemistry. Energy Lesson 1 Exothermic and endothermic reactions
Published: 2014/02/23
Channel: Freesciencelessons
Spontaneous endothermic reaction
Spontaneous endothermic reaction
Published: 2015/06/03
Channel: Random Experiments International
Endothermic vs. Exothermic Phase Changes
Endothermic vs. Exothermic Phase Changes
Published: 2016/02/22
Channel: CarinaChristo
Adding heat in an endothermic reaction
Adding heat in an endothermic reaction
Published: 2013/11/25
Channel: Courtney Harrington
Endothermic Reaction, SMES-ES Lab
Endothermic Reaction, SMES-ES Lab
Published: 2014/10/14
Channel: Wade Hanse
Thermochemical Equations Practice Problems
Thermochemical Equations Practice Problems
Published: 2012/04/15
Channel: Tyler DeWitt
Chilling Endothermic Reaction
Chilling Endothermic Reaction
Published: 2016/12/19
Channel: mopatin
Chilling effects – a spontaneous endothermic demonstration
Chilling effects – a spontaneous endothermic demonstration
Published: 2016/10/13
Channel: Royal Society of Chemistry
Endothermic Reaction.
Endothermic Reaction.
Published: 2015/03/30
Channel: Science and Maths by Primrose Kitten
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
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
GCSE Chemistry. Breaking bonds - making bonds. exothermic, endothermic
GCSE Chemistry. Breaking bonds - making bonds. exothermic, endothermic
Published: 2014/04/21
Channel: Kirkman Chemistry
Exothermic and Endothermic Reactions
Exothermic and Endothermic Reactions
Published: 2013/03/13
Channel: TutorVista
iGCSE / GCSE Chemistry: Exothermic and endothermic reactions exercise
iGCSE / GCSE Chemistry: Exothermic and endothermic reactions exercise
Published: 2015/10/23
Channel: IGCSE World
Endothermic and Exothermic Reactions.
Endothermic and Exothermic Reactions.
Published: 2015/04/03
Channel: Science and Maths by Primrose Kitten
Endothermic Reaction using NH4NO3 and water
Endothermic Reaction using NH4NO3 and water
Published: 2009/04/27
Channel: diamondog06
Chem Demo - Endothermic Reaction
Chem Demo - Endothermic Reaction
Published: 2014/04/29
Channel: DeadlyLaugh
NEXT
GO TO RESULTS [51 .. 100]

WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
  (Redirected from Endothermic)
Jump to: navigation, search

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. ^ : {| border="0" |7
    3
    Li
      | +  |
    n
      |→  |4
    2
    He
      | +  |3
    1
    T
      | +  |
    n
    |} 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. Bibcode:1998ApJ...494..285Q. doi:10.1086/305198.

External links[edit]

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Powered by YouTube
Wikipedia content is licensed under the GFDL and (CC) license