Physical entity
Aluminium
Arsenic
Bromine
Selenium
Carbon
Carbon dioxide
Copper
Glycine
Ammonium
Antimony
Atrazine
Beryllium
Boron
Cadmium
Calcium(2+)
Calcium
Hydrogencarbonate
Carbonate
Chloride
Chlorine
Chlorophyll
Chlorophyll a
Chromium
Cobalt
Dioxygen
Oxygen
Fluoride
Iron(2+)
Iron
Lead
Magnesium(2+)
Magnesium
Manganese
Methane
Nickel
Nitrate
Nitrite
Nitrogen
Nitrogen dioxide
Nitrous oxide
Ozone
Phosphate
Phosphorus
Potassium(1+)
Potassium
Sulfur hexafluoride
Silicon dioxide
Silicon
Sodium(1+)
Sodium
Strontium
Sulfate
Sulfur
Titanium
Uranium
Vanadium
Zinc
Radon
Lithium
Molybdenum
Rubidium
Caesium
Mercury
Tungsten
Barium
Cerium
Dysprosium
Erbium
Tin
Europium
Gadolinium
Holmium
Lanthanum
Lutetium
Neodymium
Praseodymium
Samarium
Terbium
Thorium
Thulium
Ytterbium
Zirconium
Fluorine
Yttrium
Gallium
Argon
Neon
Bromide
Tetrachloromethane
Fluorocarbon 113
Dichlorodifluoromethane
Chloroform
Methyl chloroform
Thallium
Tellurium
Tantalum
Niobium
Germanium
Rhenium
Scandium
Bismuth
Hafnium
Silicic acid
Fluorescein
Rhodamine
Aclonifen
Ametryn
Aminotriazole
Aminomethylphosphonic acid
Butralin
Carbematide
Chlorotrifluoromethane
Cyanazine
Cycloxydim
Diuron
Dopant-free conductive polyurethane elastomer
Deethylatrazine
Desmetryn
Dichlobenil
Flazasulfuron
Fluazifop-P-butyl
Flumioxazin
Glyphosate
Isoxaben
Oryzalin
Oxadiazon
Oxyfluorfen
Polychlorobiphenyl
Prometryn
Propazine
Simazine
Terbutylazine
Hydrogen
Tritium
Deuterium
Protium
Acetochlor
Alachlor
Chlorotoluron
Cyproconazole
Diclofop-methyl
Difenoconazole
Epoxiconazole
Ethofumesate
Fenpropimorph
Flusilazole
Hexazinone
Ioxynil octanoate
Isoproturon
Linuron
Metazachlor
Metobromuron
Metolachlor
Metoxuron
Monolinuron
Penconazole
Pendimethalin
Sebuthylazine
Tebuconazole
Trifluralin
Major ions
Silver
Potassium-40
Thorium-232
Uranium-238
Methanesulfonic acid
Platinum
Palladium
Rhodium
[Chebi] A chemical entity is a physical entity of interest in chemistry including molecular entities, parts thereof, and chemical substances.
Chemical entity
Concept
SKOS Concept
definition
A statement or formal explanation of the meaning of a concept.
is in scheme
Relates a resource (for example a concept) to a concept scheme in which it is included.
preferred label
A resource has no more than one value of skos:prefLabel per language tag, and no more than one value of skos:prefLabel without language tag.
The range of skos:prefLabel is the class of RDF plain literals.
skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties.
The preferred lexical label for a resource, in a given language.
has broader
Broader concepts are typically rendered as parents in a concept hierarchy (tree).
Relates a concept to a concept that is more general in meaning.
has narrower
Narrower concepts are typically rendered as children in a concept hierarchy (tree).
Relates a concept to a concept that is more specific in meaning.