Water
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance , which is the main constituent of Earth 's streams, lakes, and oceans, and the fluids of most living organisms . It is vital for all known forms of life , even though it provides no calories or organic nutrients . Its chemical formula is H 2 O , meaning that each of its molecules contains one oxygen and two hydrogen atoms connected by covalent bonds . Water is the name of the liquid state of H 2 O at standard ambient temperature and pressure . It forms precipitation in the form of rain and aerosols in the form of fog . Clouds are formed from suspended droplets of water and ice , its solid state. When finely divided, crystalline ice may precipitate in the form of snow . The gaseous state of water is steam or water vapor . Water moves continually through the water cycle of evaporation , transpiration ( evapotranspiration ), condensation , precipitation , and runoff , usually reaching the sea.
Page Revisions
| Year | Metadata | Sections | Top Words | First Paragraph |
| 2018 |
434292 characters 47 sections 112 paragraphs 54 images 969 internal links 292 external links |
2. Chemical and physical properties |
water 0.639 drinking 0.167 food 0.145 gal 0.142 liters 0.101 hydrogen 0.101 potable 0.095 steam 0.092 intake 0.086 solvent 0.086 atm 0.080 liquid 0.079 substances 0.076 imp 0.076 pollution 0.073 |
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance , which is the main constituent of Earth 's streams, lakes, and oceans, and the fluids of most living organisms . It is vital for all known forms of life , even though it provides no calories or organic nutrients . Its chemical formula is H 2 O , meaning that each of its molecules contains one oxygen and two hydrogen atoms connected by covalent bonds . Water is the name of the liquid state of H 2 O at standard ambient temperature and pressure . It forms precipitation in the form of rain and aerosols in the form of fog . Clouds are formed from suspended droplets of water and ice , its solid state. When finely divided, crystalline ice may precipitate in the form of snow . The gaseous state of water is steam or water vapor . Water moves continually through the water cycle of evaporation , transpiration ( evapotranspiration ), condensation , precipitation , and runoff , usually reaching the sea. |
| 2017 |
373536 characters 46 sections 111 paragraphs 53 images 938 internal links 183 external links |
2. Chemical and physical properties |
water 0.651 drinking 0.180 food 0.148 potable 0.097 hydrogen 0.095 liters 0.093 steam 0.088 intake 0.088 solvent 0.088 atm 0.082 liquid 0.081 substances 0.078 safe 0.076 pollution 0.075 people 0.074 |
Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms . Its chemical formula is H 2 O , meaning that each of its molecules contains one oxygen and two hydrogen atoms that are connected by covalent bonds . Strictly speaking, water refers to the liquid state of a substance that prevails at standard ambient temperature and pressure ; but it often refers also to its solid state ( ice ) or its gaseous state ( steam or water vapor ). It also occurs in nature as snow, glaciers , ice packs and icebergs , clouds, fog , dew , aquifers , and atmospheric humidity . |
| 2016 |
368191 characters 45 sections 108 paragraphs 55 images 1031 internal links 164 external links |
1. Chemical and physical properties |
water 0.646 drinking 0.188 food 0.148 potable 0.101 hydrogen 0.094 steam 0.092 liters 0.087 safe 0.085 people 0.077 atm 0.077 sanitation 0.076 wastewater 0.076 liquid 0.072 rivers 0.072 solutes 0.071 |
Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams , lakes , and oceans , and the fluids of most living organisms . Its chemical formula is H 2 O , meaning that its molecule contains one oxygen and two hydrogen atoms , that are connected by covalent bonds . Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure ; but it often refers also to its solid state ( ice ) or its gaseous state ( steam or water vapor ). It also occurs in nature as snow , glaciers , ice packs and icebergs , clouds , fog , dew , aquifers , and atmospheric humidity . |
| 2015 |
352435 characters 38 sections 93 paragraphs 55 images 991 internal links 147 external links |
1. Chemical and physical properties |
water 0.648 drinking 0.206 food 0.147 potable 0.111 liters 0.095 safe 0.093 pollution 0.085 people 0.085 sanitation 0.083 wastewater 0.083 rivers 0.079 solutes 0.078 intake 0.078 steam 0.077 vapor 0.071 |
Water (chemical formula: H 2 O ) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound , a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds . Water is a liquid at standard ambient temperature and pressure , but it often co-exists on Earth with its solid state, ice ; and gaseous state, steam ( water vapor ). It also exists as snow , fog , dew and cloud . |
| 2014 |
330105 characters 40 sections 94 paragraphs 53 images 977 internal links 113 external links |
1. Chemical and physical properties |
water 0.648 drinking 0.205 food 0.154 potable 0.111 sanitation 0.097 liters 0.095 safe 0.093 pollution 0.085 people 0.084 wastewater 0.083 rivers 0.079 solutes 0.078 steam 0.077 vapor 0.071 access 0.071 |
Water is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of living things. As a chemical compound , a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds . Water is a liquid at standard ambient temperature and pressure , but it often co-exists on Earth with its solid state, ice ; and gaseous state, steam ( water vapor ). |
| 2013 |
262072 characters 37 sections 97 paragraphs 52 images 753 internal links 74 external links |
1. Chemical and physical properties |
water 0.647 drinking 0.214 food 0.167 potable 0.109 sanitation 0.095 liters 0.093 safe 0.091 people 0.088 pollution 0.084 steam 0.084 wastewater 0.082 rivers 0.078 solutes 0.077 vapor 0.070 hardness 0.070 |
Water
is a
chemical compound
with the
chemical formula
H
|
| 2012 |
237711 characters 37 sections 91 paragraphs 50 images 624 internal links 76 external links |
1. Chemical and physical properties 6. Effects on human civilization |
water 0.644 drinking 0.215 food 0.168 potable 0.110 sanitation 0.096 liters 0.094 safe 0.092 people 0.089 pollution 0.085 steam 0.084 wastewater 0.082 rivers 0.078 solutes 0.077 vapor 0.071 hardness 0.070 |
Water
is a
chemical compound
with the
chemical formula
H
|
| 2011 |
220477 characters 37 sections 93 paragraphs 45 images 608 internal links 73 external links |
1. Chemical and physical properties 6. Effects on human civilization |
water 0.645 drinking 0.215 food 0.168 potable 0.110 sanitation 0.096 liters 0.094 safe 0.092 people 0.089 pollution 0.085 steam 0.084 wastewater 0.082 rivers 0.078 solutes 0.077 oxygen 0.076 hydrogen 0.075 |
Water is a chemical substance with the chemical formula H 2 O . 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. [1] [2] Under nomenclature used to name chemical compounds , Dihydrogen monoxide is the scientific name for water, though it is almost never used. [3] |
| 2010 |
209584 characters 37 sections 88 paragraphs 46 images 594 internal links 53 external links |
1. Chemical and physical properties 3. Distribution of water in nature 6. Effects on human civilization |
water 0.634 drinking 0.222 potable 0.120 food 0.119 liters 0.102 pollution 0.092 steam 0.091 sanitation 0.089 wastewater 0.089 safe 0.087 hydrogen 0.086 solutes 0.084 oxygen 0.083 hardness 0.077 solvent 0.072 |
Water is a chemical substance with the chemical formula H 2 O. Its 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 . |
| 2009 |
190270 characters 37 sections 85 paragraphs 48 images 562 internal links 44 external links |
1. Chemical and physical properties 3. Distribution of water in nature 6. Effects on human civilization |
water 0.644 drinking 0.228 food 0.122 potable 0.109 liters 0.105 safe 0.096 pollution 0.094 steam 0.094 solutes 0.086 vapor 0.079 hardness 0.079 sanitation 0.076 solvent 0.074 boiling 0.073 rivers 0.073 |
Water is a ubiquitous chemical substance that is composed of hydrogen and oxygen and is essential for all known forms of life . [1] |
| 2008 |
196563 characters 32 sections 88 paragraphs 49 images 575 internal links 40 external links |
2. Chemical and physical properties 3. Distribution of water in nature 6. Effects on human civilization 7. Water politics and water crisis |
water 0.639 drinking 0.234 food 0.135 potable 0.093 pollution 0.092 steam 0.091 tt 0.089 safe 0.087 solutes 0.084 solvent 0.084 vapor 0.083 substances 0.079 hardness 0.077 sanitation 0.075 wastewater 0.075 |
Water is a common chemical substance that is essential for the survival of all known forms of life . In typical usage, water refers only to its liquid form or state , but the substance also has a solid state, ice , and a gaseous state, water vapor or steam . Water covers 71% of the Earth 's surface [1] , mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor , clouds (formed of solid and liquid water particles suspended in air), and precipitation . [2] Saltwater oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers , lakes and ponds 0.6%. A very small amount of the Earth's water is contained within water towers , biological bodies, manufactured products, and food stores. Other water is trapped in ice caps, glaciers, aquifers, or in lakes, sometimes providing fresh water for life on land. |
| 2007 |
163813 characters 30 sections 88 paragraphs 46 images 539 internal links 22 external links |
2. Chemical and physical properties 3. Distribution of water in nature 6. Effects on human civilization 7. Water politics and water crisis |
water 0.645 drinking 0.213 food 0.137 tt 0.106 pollution 0.104 potable 0.094 hardness 0.089 solutes 0.085 vapor 0.084 sanitation 0.076 wastewater 0.076 solvent 0.073 boiling 0.073 rivers 0.072 consumption 0.071 |
Water is a common chemical substance that is essential to all known forms of life . [1] In typical usage, water refers only to its liquid form or state , but the substance also has a solid state, ice , and a gaseous state, water vapor . About 1,460 teratonnes (Tt) of water covers 71% of the Earth 's surface, mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor , clouds (formed of solid and liquid water particles suspended in air), and precipitation . [2] Some of the Earth's water is contained within man-made and natural objects near the Earth's surface such as water towers , animal and plant bodies, manufactured products, and food stores. |
| 2006 |
156849 characters 39 sections 74 paragraphs 35 images 493 internal links 54 external links |
1. Chemical and physical properties 2. Position of the Earth relating to water 4. Effects on human civilization |
water 0.577 jordan 0.210 israel 0.155 drinking 0.139 food 0.112 ft3 0.108 countries 0.100 substances 0.095 hardness 0.095 river 0.088 hydrogen 0.088 rivers 0.084 molecules 0.082 sanitation 0.081 dam 0.080 |
Template:Two other uses Water is a chemical substance that is essential to all known forms of life . It appears colourless to the naked eye in small quantities. It covers nearly 70% of Earth's surface. The UN Environment Program estimates there are 1.4 billion cubic kilometres (330 million mi 3 ) [1] of it available on Earth , and it exists in many forms. It appears mostly in the oceans ( saltwater ) and polar ice caps , but it is also present as clouds , rain water , rivers , freshwater aquifers , lakes , and sea ice . Water in these bodies perpetually moves through a cycle of evaporation , precipitation , and runoff to the sea . Clean water is essential to human life. In many parts of the world, it is in short supply. Significant quantities are believed to exist on the moons Europa and Enceladus . [ citation needed ] |
| 2005 |
50600 characters 11 sections 36 paragraphs 9 images 226 internal links 26 external links |
2. Astronomical position of Earth and impact on its water |
water 0.514 substances 0.160 drinking 0.133 taste 0.128 hydrophilic 0.102 greenhouse 0.102 forces 0.101 springs 0.094 drink 0.091 resource 0.090 wells 0.086 intake 0.082 solvent 0.082 rivers 0.081 consumption 0.080 |
Water (from the Old English word wæter ; c.f German "Wasser", from PIE *wod-or , "water") is a tasteless , odorless , and nearly colorless (it has a slight hint of blue) substance in its pure form that is essential to all known forms of life and is known also as the most universal solvent . Water is an abundant substance on Earth . It exists in many places and forms. It appears mostly in the oceans and polar ice caps , but also as clouds , rain water , rivers , freshwater aquifers , and sea ice . On the planet, water is continuously moving through the cycle involving evaporation , precipitation , and runoff to the sea . |
| 2004 |
32747 characters 10 sections 32 paragraphs 5 images 162 internal links 11 external links |
water 0.502 drinking 0.241 substances 0.129 wells 0.111 waste 0.107 forms 0.106 islam 0.103 needy 0.098 springs 0.097 resource 0.093 rain 0.092 availability 0.091 tension 0.091 earth 0.088 temperature 0.086 |
This article focuses on water as we experience it every day. The water (molecule) article describes the water chemical and physical properties from a scientific and technical perspective. |
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| 2003 |
28946 characters 15 sections 33 paragraphs 0 images 131 internal links 5 external links |
2. The dipolar nature of water 4. Cohesion and surface tension |
water 0.459 molecules 0.258 molecule 0.224 hydrogen 0.208 solute 0.203 ions 0.181 acid 0.144 nonpolar 0.135 bonds 0.134 dipoles 0.114 bonding 0.105 solvent 0.098 ionic 0.096 impurities 0.093 oxygen 0.091 |
Water is a chemical compound and polar molecule , which is liquid under STP conditions. It has the chemical formula H 2 O , meaning that one molecule of water is composed of 2 hydrogen atoms and one oxygen atom. Water is found almost everywhere on earth and is required by all known life . About 70% of Earth 's surface is covered by water. |
| 2002 |
18195 characters 8 sections 24 paragraphs 0 images 84 internal links 1 external links |
water 0.353 molecules 0.290 solute 0.287 molecule 0.245 hydrogen 0.214 nonpolar 0.191 dipoles 0.161 solvent 0.138 ionic 0.135 impurities 0.132 anode 0.127 cathode 0.127 ions 0.113 bonds 0.113 attracted 0.108 |
Water is a simple chemical compound that is liquid at room temperature and pressure . It has the chemical formula H 2 O , meaning that one molecule of water is composed of 2 atoms of hydrogen and one atom of oxygen . Water is found almost everywhere on earth and is vital to all known living organisms. About 70% of the earth's surface is covered by water. |
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| 2001 |
5346 characters 0 sections 12 paragraphs 0 images 38 internal links 0 external links |
solute 0.365 dipoles 0.342 molecules 0.270 water 0.264 solvent 0.220 intermolecular 0.202 tension 0.188 bonds 0.180 attraction 0.171 molecule 0.168 negative 0.137 positive 0.124 soluble 0.122 vital 0.114 attracted 0.114 |
A simple chemical compound that is liquid at room temperature and pressure . Has the chemical formula H 2 O. Found almost everywhere on Earth . Predominantly in seas and oceans . Vital to most living organisms. The physical properties of water are used to define the Celsius scale for measuring temperature . |