water

Water (chemical formula H2O) 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, H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the 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.
A number of natural states of water exist. 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 approximately 70.9% 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

    Holes forming in grout on water exposure

    Grout failing 5 days after job completed. What is the cause, poor mix, ,application or something else? The business who carried out the work are coming to assess in a couple of days and I'd like to know what level of poor workmanship I've been exposed to
  2. Arelia

    How to cut water and energy bills at home - Acqua Tempus

    An electronic device to restrict the maximum shower time and thus save lots of water and gas in the shower. Easy to install and program. Water leak detector: if we leave the tap open, once Acqua Tempus returns to shower mode, it will detect it is open and will cut off again the tap. For sales...
  3. Shower timer with shut off Acqua Tempus -

    Shower timer with shut off Acqua Tempus -

    The Acqua Tempus shower timer is an easy-to-install device that restricts the maximum shower time, thus saving large amounts of water and gas. It prevents our children or hotel guests from taking excessively long showers, reducing our water and gas bills and helping to combat global warming...
  4. S

    Can you tile on routed water UFH?

    Morning all, I have been given the opportunity to quote for a 110m floor in a chevron pattern. Around 80m of it is screed and the remaining 30m will be on a 12mm cement board, bringing an existing floor together with a new one. The cement board will be going down over 22mm floorboards in 3...
  5. M

    Water marks on matt Regal tiles

    We had matt slate Regal tiles laid in our kitchen three years ago and they are starting to look really water damaged. We do use a non-abrasive floor cleaner but I think we might have damaged them somehow. Is there anything we can do/use to restore them? Any suggestions gratefully received!
  6. J

    Rain water in joints!

    Hi guys, made a complete rookie mistake! Been tiling a couple of years now..and recently Done my first Victorian mosaic forecourt about a month ago, haven't been able to get back due to my partner being hospitalised, she's all good now and we're both back to work. Unfortunately with...
  7. Scotiansailor

    Stone sealer that doesnt change the look, but allows water in for wet look

    Hello, is there any such thing as a sealer/impregnator for our pebble shower floor that would allow the stones to look dry when dry, but wet when the shower is in use? Many thanks :) Laura
  8. S

    Split Face Quartzite Mosaic Tiles sealer for wet look and Silicon Waterseal Masonry Sealer on top to water seal 100%?

    Hi all, Finding it a little hard to get my head around something and hoping one of you might be able to help/ advise. I had some Split Face Quartzite Mosaic Tiles and I want to know a few questions. I want to seal them as best as possible and have them kinda add a wet/darker look to them...
  9. naomin

    Small water barrier

    I'd like to build a small mosaic barrier that will sit on the edge of my bathtub, against the wall, to keep water from sloshing out at that end.
  10. R

    Tiler Water slipping through tiles and floor boards

    Hi, My family has been having issues whenever someone takes a shower the water slips through the tiles and floor boards to our dining room. This has been going on for numerous years. We can't seem to find a solution and need to find a reasonable price solution. It would be appreciative if you...
  11. A

    Water leak around bathtub edges

    We had the bathroom refitting over 2 years ago. We have been experiencing a recurring issue with water leaking through the gap between the bath tub and the tiles . Next to to the bathroom is a bedroom, and we have seen the water leak through the wall and the flooring in the next room. We have...
  12. Y

    Why Water Repellent for Stone Turns Yellow?

    Hello everyone, I am wondering why some surface water repellents for stone easily turns yellow over time? Is it because of their components reacting with atmosphere or rain? (I am not sure if it is proper to ask this question here . If not, I will delete it.) Best regards, Sam
  13. T

    Porcelain Faulty tiles Hollywood Gloss

    Spanish Hollywood Gloss porcelain tiles are absorbing water on all four edges In shower. No code on side of tiles which they should have (same tiles from another store all have codes on). Perhaps these tiles missed a finishing process in factory of sealing and code being put on sides? (Were...
  14. P

    Tiles falling off in shower enclosure

    Hi, a few tiles keep falling off in the shower enclosure. Any tips on the best material to use to replace the plaster. Pink area in the middle. Thinking sand and cement (4/1 parts) or aquapanel piece screwed in. thanks, pras
  15. A

    Adhesive Understanding water absorption %

    Hello I recently purchased tiles from the Biscuit series (41zero42). Before installing them on gypsum board ( Drywall), I wanted to make sure what is the percentage of water absorption of the tiles, so that I could use a suitable adhesive. Are they considered absorbent tiles? (Over 10%)? I’m not...
  16. D

    Alcove Shower Refit - water damage to chipboard floor, stud walls & plasterboard

    First post :) I'm having to refit a first floor shower alcove in a 20 year old house that has suffered water damage from the shower to the floorboards & stud wall. Construction is 22mm V313 MR chipboard floor on treated 9x2 timber joists at 600 centres with the 1000x800 alcove formed of...
  17. T

    Waste water??

    Hi Everyone on here, Just wondering what everyone does with their waste water on domestic/residential jobs? Im fed up trying to get rid off the stuff especially with watercourses and drains being a no go and dont really like buckets of the stuff ‘settling’ at peoples property. Anyone know any...
  18. M

    Water not flowing to shower drain / Incorrect Fall Levels?

    Hi, We have just done some bathroom modifications privately to level out a shower floor for an elderly disabled bathroom. We just did the shower area and not the whole bathroom (so only the pink tiles are new). The water is flowing outside of the shower, suggesting the fall levels are not...
  19. K

    Natural Stone Exterior natural stone patio marked by water after sealing

    Hi all, I have recently sealed my natural stone patio and have found that when it gets wet it leaves a white mark almost as if the sealant has been lifted. I have read another thread that says this is because one of two things has happened, either the sealer was not applied correctly and...
  20. T

    removing hard water stains/limescale on tiles

    I am having trouble removing hard water stains/limescale on some old tiles, any tips or products to use Thanks
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