Water

E343615

Water is a fundamental chemical substance (H₂O) essential for life, known for its roles in biological processes, climate regulation, and human civilization.

All labels observed (2)

Label Occurrences
Water canonical 3
Earth hydrosphere 1

How this entity was disambiguated

Statements (67)

Predicate Object
instanceOf chemical substance ⓘ
inorganic compound ⓘ
molecule ⓘ
oxide ⓘ
polar solvent ⓘ
vital resource ⓘ
appearance colorless liquid ⓘ
averageOceanSalinity about 35 g/kg ⓘ
boilingPoint 100 °C ⓘ
CASNumber 7732-18-5 ⓘ
chemicalFormula H2O ⓘ
commonAllotropeOf hydrogen oxide ⓘ
containsElement hydrogen ⓘ
oxygen ⓘ
covers about 71% of Earth surface ⓘ
criticalPointPressure 22.064 MPa ⓘ
criticalPointTemperature 374 °C ⓘ
densityAt25°C 0.997 g/cm³ ⓘ
densityAt4°C 1 g/cm³ ⓘ
dielectricConstant about 80 at 20 °C ⓘ
gaseousPhaseName steam ⓘ
water vapor ⓘ
heatOfFusion about 6.01 kJ/mol ⓘ
heatOfVaporization about 40.7 kJ/mol ⓘ
hydrogenBonding forms extensive hydrogen bonds ⓘ
isPartOf Earth hydrosphere ⓘ
linked to: Earth oceans
isResourceType freshwater ⓘ
saltwater ⓘ
isVitalFor animal life ⓘ
human survival ⓘ
plant growth ⓘ
meltingPoint 0 °C ⓘ
molarMass 18.01528 g/mol ⓘ
odor odorless ⓘ
pH approximately 7 at 25 °C ⓘ
polarity polar ⓘ
refractiveIndexAt20°C about 1.333 ⓘ
roleInBiology essential for life on Earth ⓘ
involved in cellular respiration ⓘ
involved in photosynthesis ⓘ
major component of cells ⓘ
medium for biochemical reactions ⓘ
regulates body temperature in organisms ⓘ
roleInClimate acts as greenhouse gas in vapor form ⓘ
influences weather patterns ⓘ
key component of the hydrological cycle ⓘ
stores and transports heat in oceans ⓘ
roleInGeology agent of erosion ⓘ
participates in rock weathering ⓘ
roleInHumanCivilization used for agriculture ⓘ
used for drinking ⓘ
used for hydroelectric power generation ⓘ
used for industry ⓘ
used for sanitation ⓘ
used for transportation ⓘ
solidPhaseName ice ⓘ
solventFor many ionic compounds ⓘ
many polar organic compounds ⓘ
specificHeatCapacity 4.18 J/(g·K) ⓘ
standardState liquid ⓘ
stateAtRoomTemperature liquid ⓘ
surfaceTensionAt20°C about 72.8 mN/m ⓘ
taste tasteless ⓘ
thermalConductivityAt25°C about 0.6 W/(m·K) ⓘ
triplePoint 0.01 °C at 611.657 Pa ⓘ
UNNumber UN 3082 ⓘ
viscosityAt20°C about 1.0 mPa·s ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Deepa Mehta → knownFor → Water ⓘ
Great Oxidation Event → locatedIn → Earth hydrosphere ⓘ
linked to: Water