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What is water
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Water is a molecule that contains two atoms of hydrogen and one atom of oxygen. It can exist as a solid, liquid or gas on Earth, depending on the temperature. It covers 70.9 percent of Earth's surface. Living things depend on water to survive. The oxygen atom has a slight negative charge relative to the two hydrogens atoms which are slightly positive, making water a polar molecule. There are strong attractive forces between water molecules. This accounts for capillary action, when water molecules can move up a narrow tube, against the force of gravity, allowing it to travel upwards from roots, to stems to leaves, in the xylem tubes of conducting tissue in plants. It is a universal solvent and important substances for living things such as salt, sugar, acid, alkalis and gases as well as protein, DNA and polysaccharides, can dissolve in it.
Posted by trophyhunter1 on April 29, 2012 at 1:26 PM (Answer #1)
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 ambient conditions, 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. Under nomenclature used to name chemical compounds, dihydrogen monoxide is the scientific name for water, though it is almost never used.
Posted by apramey on April 30, 2012 at 4:15 PM (Answer #2)
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when hydrogen and oxygen mixes = H20, it forms water.
Posted by astrosonu on July 27, 2012 at 4:34 PM (Answer #3)
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