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Part 1010-37.1
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Part 10: Atomic and Nuclear·125 entries
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Section 10-372 entries
10-37.110-37.2
10-37.1

reaction energy

URNurn:iso:std:iso:80000:-10:ed-2:en:item:10-37.1
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https://metanorma.github.io/isq-smart/quantities/part-10/t10-37.1
urn:iso:std:iso:80000:-10:ed-2:en:item:10-37.1
ISQ Identifiers
ISO
urn:iso:std:iso:80000:-10:ed-2:en:item:10-37.1
IEC
urn:iec:std:iec:80000-10:2019:::item:10-37.1
Designations
ENreaction energy
FRénergie de réaction
Symbol
Q
Notation systems
Rendered
Q
AsciiMath
Q
LaTeX
Q

Definition

EN

in a nuclear reaction, sum of the kinetic energies (ISO 80000-4: Mechanics) and photon energies (ISO 80000-5: Thermodynamics) of the reaction products minus the sum of the kinetic and photon energies of the reactants

FR

dans une réaction nucléaire, différence entre la somme des énergies cinétiques (ISO 80000-4: Mechanics) et des énergies (ISO 80000-5: Thermodynamics) photoniques des produits de la réaction, et la somme des énergies cinétiques et photoniques des particules réagissantes

Units

e V
electronvolt
View related quantities →
J
joule
View related quantities →
k g ⋅ m 2 ⋅ s − 2
kilogram square metre per second squared
View related quantities →

Notes

EN

For exothermic nuclear reactions, Q > 0 .

For endothermic nuclear reactions, Q < 0 .

FR

Pour les réactions nucléaires exothermiques, Q > 0 .

Pour les réactions nucléaires endothermiques, Q < 0 .

Concept HierarchyPendrill (2024)
L² M T⁻²energy-type quantitiesLevel 0 · Kind

Characterizes

● photon

Ontology
isq:Quantitysmart:TermEntry

Class Hierarchy

smart:Entitysmart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t10-37.1

Properties

isq:QuantityShape
PropertyValue
rdf:type
isq:Quantitysmart:TermEntry
dcterms:identifier
10-37.1
skosxl:prefLabel
"reaction energy"@en
skosxl:altLabel
"Q"@en
skos:definition
in a nuclear reaction, sum of the kinetic energies (<<iso80000-4>>) and photon energies (<<iso80000-5>>) of the reaction…
skos:note
For exothermic nuclear reactions, stem:[Q>0]. For endothermic nuclear reactions, stem:[Q<0].
isq:hasUnit
eV (electronvolt)J (joule)kg*m^2*s^(-2) (kilogram square metre per second squared)
isq:hasDimension
isq:Dimension
smart:hasBindingnessType
bindingness-type:normative
dcterms:isPartOf
isq:part-10

Related Entities

isq:QuantityShape isq:part-10 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry