Chemical entity
type: Concept
narrower: Silicon

Silicon
type: Concept
type: Entity
definition: [Wikipedia] Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive. Because of its high chemical affinity for oxygen, it was not until 1823 that Jöns Jakob Berzelius was first able to prepare it and characterize it in pure form. Its oxides form a family of anions known as silicates. Its melting and boiling points of 1414 °C and 3265 °C respectively are the second highest among all the metalloids and nonmetals, being only surpassed by boron. Silicon is the eighth most common element in the universe by mass, but very rarely occurs as the pure element in the Earth's crust. It is most widely distributed in space in cosmic dusts, planetoids, and planets as various forms of silicon dioxide (silica) or silicates. More than 90% of the Earth's crust is composed of silicate minerals, making silicon the second most abundant element in the Earth's crust (about 28% by mass), after oxygen. Silicon is a natural element, and when not previously present has a residence time of about 400 years in the world's oceans
is in scheme: ozcar-theia
alternative label: Si
broader: Chemical entity
has related match: http://vocabs.lter-europe.net/EnvThes/20865
created: 2022-02-07T17:00:00

Entity
type: Class

type
comment: The subject is an instance of a class.

Concept
type: Class
label: SKOS Concept

definition
definition: A statement or formal explanation of the meaning of a concept.
sub property of: note

is in scheme
definition: Relates a resource (for example a concept) to a concept scheme in which it is included.

preferred label
comment: 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.
comment: The range of skos:prefLabel is the class of RDF plain literals.
comment: skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties.
definition: The preferred lexical label for a resource, in a given language.
sub property of: label

alternative label
comment: The range of skos:altLabel is the class of RDF plain literals.
comment: skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties.
definition: An alternative lexical label for a resource.
sub property of: label

has broader
comment: Broader concepts are typically rendered as parents in a concept hierarchy (tree).
definition: Relates a concept to a concept that is more general in meaning.
sub property of: broaderTransitive

has related match
definition: skos:relatedMatch is used to state an associative mapping link between two conceptual resources in different concept schemes.
sub property of: related
sub property of: mappingRelation

has exact match
comment: skos:exactMatch is disjoint with each of the properties skos:broadMatch and skos:relatedMatch.
definition: skos:exactMatch is used to link two concepts, indicating a high degree of confidence that the concepts can be used interchangeably across a wide range of information retrieval applications. skos:exactMatch is a transitive property, and is a sub-property of skos:closeMatch.
sub property of: closeMatch