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Earth's approximate water volume (the total water supply of the world) is 1.386 billion cubic kilometres (333 million cubic miles). [23] Liquid water is found in bodies of water, such as an ocean, sea, lake, river, stream, canal, pond, or puddle. The majority of water on Earth is seawater.
- Water (Disambiguation)
Water is a chemical substance with the formula H 2 O. A...
- Inorganic Compound
In chemistry, an inorganic compound is typically a chemical...
- Water Vapor
Water vapor, water vapour or aqueous vapor is the gaseous...
- Properties of Water
Water is the chemical substance with chemical formula H. 2O;...
- Drinking Water
Drinking water or potable water is water that is safe for...
- Color of Water
When water is in small quantities (e.g. in a glass) it...
- Steam
Steam is water in the gas phase,: 7 and sometimes also an...
- Standard Temperature and Pressure
Definitions. In chemistry, IUPAC changed its definition of...
- Thirst
Thirst (1886), by William-Adolphe Bouguereau. Thirst is the...
- Water (Disambiguation)
- Physical Chemistry of Water
- Uses of Water
- Dihydrogen Monoxide Parody
- Origin of The Earth's Water
- Other Websites
Water is a fluid. Water is the only chemical substance on Earth that exists naturally in three states. There are over 40 anomalies (strange things) about water. Unlike most other liquids such as alcohol or oil, when water freezes, it expands by about 9%.This expansion can cause pipes to break if the water inside them freezes. Water is a molecule ma...
Plants and animals (including people) are mostly water inside, and must drink water to live. It gives a medium for chemical reactions to take place, and is the main part of blood. It keeps the body temperature the same by sweating from the skin. Water helps blood carry nutrients from the stomach to all parts of the body to keep the body alive. Wate...
The dihydrogen monoxide parodyinvolves calling water by the unfamiliar chemical name "dihydrogen monoxide" (DHMO) and listing some of its harmful effects in an alarming way. Some examples include talking about how "it causes burning, suffocation and corrosion," when it is actually just talking about hot water, drowning and rust. Sometimes the parod...
The weirdness of water
A BBC short item explains that every molecule on Earth has existed for billions of years, and all of them came from elsewhere. Water is alien because it arrived on asteroids and comets. It is the second most common molecule in the universe. Why is it not a gas? It is made of two very light elements. Ice floating on water is also an oddity. Also, hot water freezes faster than cold, and no-one knows why this is. Molecules of water can move up against the force of gravity (that is due to surface...
Water in the universe
Much of the universe's water is produced as a by-product of star formation.On 22 July 2011, a report described the discovery of a gigantic cloud of water vapor containing "140 trillion times more water than the Earth's oceans combined" around a quasar12 billion light years from Earth. According to the researchers, the "discovery shows that water has been prevalent in the universe for nearly its entire existence". Water has been detected in interstellar clouds in our galaxy, the Milky Way. Wat...
Origin of water on Earth: possibilities
We do not know exactly how the Earth came to have so much water. It is everywhere in the Universe, but it is uncommon for a place to have so much. The reasoning is like this: every element (except hydrogen and some helium) has been formed in stars. Therefore, oxygen was originally formed in stars. The formation of water is not a problem: it is exothermic, so forming the molecule from its atoms does not need outside energy. But to explain why the Earth has so much compared to, for example, Mar...
Importance of Water Archived 2021-09-28 at the Wayback Machine- Space filling model of a water molecule
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Water is an inorganic compound with the chemical formula H2O. It is a transparent, tasteless, odorless, and nearly colorless chemical substance, and it is the main constituent of Earth's hydrosphere and the fluids of all known living organisms. It is vital for all known forms of life, despite not providing food energy or organic micronutrients. Its chemical formula, H2O, indicates that each of ...
The origin of water on Earth is the subject of a body of research in the fields of planetary science, astronomy, and astrobiology. Earth is unique among the rocky planets in the Solar System in having oceans of liquid water on its surface. [2] Liquid water, which is necessary for all known forms of life, continues to exist on the surface of ...
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Water (molecule) Water ( H 2 O, HOH) covers 70-75% of the Earth's surface in its liquid and solid ( ice) states, and is present in the atmosphere as a vapor. It is the most abundant molecule on the Earth's surface. [4] At room temperature, it is a nearly colorless, flavorless, and odorless liquid. Many substances dissolve in water and it is ...
