What is water?

  • (noun): Once thought to be one of four elements composing the universe (Empedocles).
    See also — Additional definitions below

Water

Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at temperatures above 0 °C (273.15 K, 32 °F) at sea level, but it often co-exists on Earth with its solid state, ice, and gaseous state (water vapor or steam). Water also exists in a liquid crystal state near hydrophilic surfaces.

Read more about Water.

Some articles on water:

Natural Gas - Safety Concerns - Production
... Subsidence may affect ecosystems, waterways, sewer and water supply systems, foundations, and so on ... gas to flow out of the shale, oil operators force 1 to 9 million US gallons (34,000 m3) of water mixed with a variety of chemicals through the wellbore casing into the shale ... The high pressure water breaks up or "fracks" the shale, which releases the trapped gas ...
Litre - Definition
1964, the litre was defined as the volume of one kilogram of pure water at 4 °C and 760 millimetres of mercury pressure ... held at Sèvres in France and was intended to be of the same mass as the 1 litre of water referred to above ... Additionally, the mass-volume relationship of water (as with any fluid) depends on temperature, pressure, purity, and isotopic uniformity ...
Quicksand
... consisting of fine granular material (such as sand or silt), clay, and water ... When water in the sand cannot escape, it creates liquefied soil that loses strength and cannot support weight ... Quicksand can be formed in standing water or in upwards flowing water (as from an artesian spring) ...
Synchronized Swimming - History
... At the turn of the 20th century, synchronized swimming was known as water ballet ... which were equipped with huge on-stage water tanks for the purpose ... with various diving actions and stunts in the water, Katherine Curtis started one of the first water ballet clubs at the University of Chicago, where the team began executing strokes, "tricks ...
Water - In Culture - Literature
... Water is used in literature as a symbol of purification ... Sherlock Holmes held that "From a drop of water, a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other." ...

More definitions of "water":

  • (noun): A fluid necessary for the life of most animals and plants.
    Example: "He asked for a drink of water"
  • (verb): Provide with water.
    Example: "We watered the buffalo"
  • (noun): Facility that provides a source of water.
    Example: "The town debated the purification of the water supply"; "first you have to cut off the water"
    Synonyms: water system, water supply
  • (verb): Secrete or form water, as tears or saliva.
    Example: "My mouth watered at the prospect of a good dinner"; "His eyes watered"
  • (noun): The part of the earth's surface covered with water (such as a river or lake or ocean).
    Example: "They were sitting by the water's edge"
    Synonyms: body of water
  • (verb): Supply with water, as with channels or ditches or streams.
    Example: "Water the fields"
    Synonyms: irrigate
  • (verb): Fill with tears.
    Example: "His eyes were watering"
  • (noun): Binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent.
    Synonyms: H2O

Famous quotes containing the word water:

    If you keep your feathers well oiled the water of criticism will run off as from a duck’s back.
    Ellen Henrietta Swallow Richards (1842–1911)

    It is with artworks as it is with wine: it is much better when we do not need either one, when we stick with water, and when out of our own inner fire, the inner sweetness of our own soul, we turn the water over and over again into wine ourselves.
    Friedrich Nietzsche (1844–1900)

    of you i
    sing: land of Abraham Lincoln and Lydia E. Pinkham,
    land above all of Just Add Hot Water And Serve—
    from every B. V. D.

    let freedom ring
    —E.E. (Edward Estlin)