Chemical energy

Energy released from chemical substances

Summary

Chemical energy is the energy of chemical substances that is released when the substances undergo a chemical reaction and transform into other substances. Some examples of storage media of chemical energy include batteries, food, and gasoline. Breaking and re-making chemical bonds involves energy, which may be either absorbed by or evolved from a chemical system. If reactants with relatively weak electron-pair bonds convert to more strongly bonded products, energy is released. Therefore, relatively weakly bonded and unstable molecules store chemical energy.

Originally created by Lir

1/1/2004, 10:07:55 PM

Modified

8/25/2025, 12:16:52 PM

Recent revisions

OAbot8/25/2025, 12:16:52 PM

[[Wikipedia:OABOT|Open access bot]]: url-access=subscription updated in citation with #oabot.

Ira Leviton8/17/2025, 5:29:29 PM

Fixed a reference. Please see [[Category:CS1 errors: dates]].

Jon Kolbert8/17/2025, 4:56:52 PM

Reference edited with [[Wikipedia:ProveIt|ProveIt]] #proveit

Steel19433/9/2025, 7:49:39 AM

/* top */ [[MOS:REFSPACE]] (remove space between reference tags), replaced: "/> <ref → "/><ref

Chompy Ace12/4/2023, 7:20:32 AM

Correct template per [[Special:Diff/896568451]]'s reasoning

SimLibrarian7/29/2023, 9:03:23 PM

rm spaces around emdashes ([[MOS:DASH]])

Dan1004/5/2023, 10:35:10 AM

m

Dan1004/5/2023, 10:34:42 AM
Khrincan3/11/2023, 10:43:29 PM

Copyedit

Dirac6611/26/2022, 11:17:21 PM

Revert unexplained deletion (June 14) of all 6 references and labeling of article as "unreferenced".

Paul252010/4/2022, 12:26:28 PM

organized page; updated tag

IpseCustos6/14/2022, 10:59:59 PM

remove ref, claims per WP:FRINGE. See WP:COIN discussion.

Klaus Schmidt-Rohr6/13/2022, 3:06:15 AM

Rephrased the contribution of oxygen to chemical-energy release in combustion.

Klaus Schmidt-Rohr6/11/2022, 2:19:46 PM

Added a textbook reference about the relation between chemical energy, chemical bonds, and stability of molecules.

Klaus Schmidt-Rohr6/10/2022, 1:55:48 AM

Clarified that weakly bonded molecules store chemical energy, with a textbook reference.

Corn cheese5/1/2022, 3:53:22 PM

/* top */

Klaus Schmidt-Rohr2/12/2022, 2:43:46 PM

Added a couple of references.

X2012/8/2022, 2:21:15 PM

Short description over 100 characters. Needs to be closer to 40 - Should be very brief explanation of topic. Please tweak if I've got this wrong, but keep it near 40 characters

WikiCleanerBot8/30/2021, 2:21:01 PM

v2.04b - [[User:WikiCleanerBot#T20|Bot T20 CW#61]] - Fix errors for [[WP:WCW|CW project]] (Reference before punctuation)

Klaus Schmidt-Rohr8/27/2021, 10:34:58 PM

Some edits for improved accuracy and clarity.

Contributors

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