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exothermic

exothermic

3 6.5
A chemical reaction that gives off heat
  • adjective
  • /ˌɛksoʊˈθɜrmɪk/
  • Specialized
translation icon : exotérmico
  • That means that the reaction isn't as exothermic as it could be.
  • exothermic reaction

So when you do bond formation, that's an exothermic process.

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Examples

  • That's because when calcium chloride dissolves in water, it's exothermic, so it actually releases heat.

  • Our calculations clearly show that rearrangements 1 → 2 and 3 → 4 are exothermic processes and could take place with very small energy barriers.

    Academic text (2001)
  • And so this would favor then the exothermic direction.

  • All of them were exothermic by about that much.

  • The triggered exothermic reaction took less than a minute to work its wonders.

    Fiction book (2002)
  • The metal oxides react with one another to form an exothermic reaction.

    Blog text (27)
  • I presume you know this, but just in case, KOH going into water is quite exothermic, so watch out for large amounts of heat generation.

    Blog text (7)
  • Both of these transitions are exothermic—that is, energy is released when they occur.

    Academic text (1992)
  • Because the reaction of dissolving sulfur trioxide into water is an extremely exothermic reaction, generates a ton of heat.

  • The methoxide reaction is exothermic, meaning it gives off heat.

Synonyms

exothermal
vsexothermic
  • Specialized
1 8.2

Giving out heat during a chemical reaction

has identical meaning but is the more common form
energy-releasing
vsexothermic
  • Specialized
1 4.1

A process that gives off energy, for example burning or digestion

is specific to heat release rather than any form of energy
thermogenic
vsexothermic
  • Specialized
1 7.4

To make the body produce more heat

applies to chemical reactions that emit heat generally, not only bodily heat
heat-releasing
vsexothermic
  • Specialized
5.2

A chemical reaction or substance that gives off heat

refers specifically to chemical heat emission rather than general energy release
calorific
vsexothermic
  • Specialized
7.4

Producing heat or able to produce heat

focuses on heat release in chemical reactions not general heat ability
exergonic
vsexothermic
  • Specialized
9.9

A process that releases energy, for example in cells

is about heat emission in chemistry more broadly than biochemical energy release

Antonyms

endothermic
  • Specialized
2 7.7

Taking in heat from the area around it

Compounds

exothermic reaction
  • Specialized
1 4.2

A chemical change that gives off heat to the area around it

How Exothermic

exothermic
  • Specialized
3 6.5
thermoneutrality
  • Specialized
9.9
endothermic
  • Specialized
2 7.7

Surface Forms

exothermic positive

Morphology

exothermic = thermic (semi-transparent) = exo + therm + ic

The prefix 'exo-' meaning 'outside' or 'external' combined with 'thermic' suggests heat release, but the specific scientific context may not be immediately clear to all learners.

Etymology

Exothermic comes from the parts exo- meaning 'outside' and therm meaning 'heat', the same root you see in thermometer. So an exothermic reaction sends heat 'out', which is why it releases heat.