Ontology

Overview / Open Energy Ontology / Class - water

Label: water

Definition:

Water is a portion of matter with the chemical formula H2O. It has a liquid normal state of matter.

Editor note:

We are aware that water is defined as pure H2O in the OEO and that naturally occurring water usually also contains impurities of other portions of matter (e.g. minerals). We purposely neglect this inconsistency for usability reasons.

Sub classes:

liquid water

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Definition:

Liquid water is water that has a liquid state of matter.

steam

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Definition:

Steam is water that has a gaseous state of matter.

Back to the super classes:

portion of matter

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Definition:

A portion of matter is an aggregate of material entities that have a state of matter.

Editor note:

Portions of matter describe mass nouns like e.g. water, air and fuel. Mass nouns are uncountable, but portions of these can be quantified, like 1 glass of water, 1 m³ of air or 1 barrel of fuel. For further explanation please refer to: https://github.com/OpenEnergyPlatform/ontology/wiki/Explanation-on-mass-nouns