What is Water: Definition and 1000 Discussions

Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, even though it provides no calories or organic nutrients. Its chemical formula is H2O, meaning that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. Two hydrogen atoms are attached to one oxygen atom at an angle of 104.45°."Water" is the name of the liquid state of H2O at standard conditions for temperature and pressure. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of 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 covers 71% of the Earth's surface, mostly in seas and oceans. Small portions of water occur as groundwater (1.7%), in the glaciers and the ice caps of Antarctica and Greenland (1.7%), and in the air as vapor, clouds (consisting of ice and liquid water suspended in air), and precipitation (0.001%). Water moves continually through the water cycle of evaporation, transpiration (evapotranspiration), condensation, precipitation, and runoff, usually reaching the sea.
Water plays an important role in the world economy. Approximately 70% of the freshwater used by humans goes to agriculture. Fishing in salt and fresh water bodies is a major source of food for many parts of the world. Much of the long-distance trade of commodities (such as oil, natural gas, and manufactured products) is transported by boats through seas, rivers, lakes, and canals. Large quantities of water, ice, and steam are used for cooling and heating, in industry and homes. Water is an excellent solvent for a wide variety of substances both mineral and organic; as such it is widely used in industrial processes, and in cooking and washing. Water, ice and snow are also central to many sports and other forms of entertainment, such as swimming, pleasure boating, boat racing, surfing, sport fishing, diving, ice skating and skiing.

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  1. T

    Testing water pipes with air pressure

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  2. |Glitch|

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  3. G

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  4. A

    Solve Water Balloon Lab Homework

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  5. M

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  6. Dusty912

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  7. N

    Normally, water is a liquid but hydrogen sulphide a gas. Why?

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  8. micromass

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  9. rajen

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  10. VegemiteJuice

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  11. A

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  12. Alfreds9

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  13. A

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  14. E

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  15. cookiemonster13

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  16. supak111

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  17. J

    B What factors affect the rate of sinking objects in water?

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  18. C

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  19. R

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  20. F

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  21. A

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  22. O

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  23. D

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  24. C

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  25. Kaneki123

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  26. Tafe

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  27. B

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  30. M

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  31. wolram

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  32. D

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  33. S

    Phase change material steady melt temp, like ice water?

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  34. grandpa2390

    Why does Water Vapor have 12 degrees of freedom?

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  35. moenste

    Heating water in a kettle (time, boil out time, work done)

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  36. CivilSigma

    Derivative in mass flow rate equation - Hydrology

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  37. S

    Gas (DO) saturation under pressure in water

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  38. Ravi Singh choudhary

    What will happen to the water level of the swimming pool?

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  39. allister109

    B Does water pressure decrease in zero gravity?

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  40. euphorik

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    Hello! I was hoping someone here could help me solve a real world problem. So my university pool has something called a bulkhead, which is basically a bridge that floats above the water so that people can walk across the shorter dimension of the rectangular pool (50 meters long, 25 yards wide)...
  41. Samwoodford1996

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  42. N

    Water wheels and mathematical equation

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  43. Assim

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  44. C

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  45. D

    Calculating Pressure Inside a Water Mist Droplet

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  46. P

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  47. E

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  48. Assim

    Find BTU Required for Water Cooling ?

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  49. F

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  50. AndresPB

    I Help with a Reference Level of Radon in Water

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