Como funciona a água

Autor: 
Shanna Freeman

In its purest form, water is odorless, colorless and almost tasteless. It is present in your body, the food you eat and the beverages you drink. You use it to clean, wash clothes, your dishes, your car and all the other things around you are que. You can swim or jump into it to cool off on hot summer days. Many of the products you use every day contain or Were manufactured using it. All forms of life need it, and if They Do not get enough of it, They die. Political disputes have centered around it. In some places, water is valued and extremely hard to find. In others, it is easy to find, and so is wasted. Which substance is most Necessary to our existence than any other? The water.

water molecule illustration

Basically, water is a molecule with one atom of oxygen and two hydrogen atoms, linked by electrons shared. It is a polar molecule in a V-shape, Which means That It is close to the positively charged hydrogen atoms and negatively near the oxygen atom. Water molecules are Attracted and stick naturally because of Their POLARITIES, forming a hydrogen bond . This hydrogen bond is the cause of many special properties of water, such as collegues it is denser than liquid solid (ice floats on water). We'll Look at these special properties later.

Rational use

Did you know que 35 liters of water are needed to produce half a liter of soda?

 

Water is the only substance que Occurs naturally as a solid (ice), liquid and a gas (water vapor). It covers about 70% of the planet Earth , a total of 1,386 million cubic miles Approximately [source: United States Geological Survey (em Inglês)]. If you know the lines "Water, water, everywhere, nor any drop to drink" the poem "Rime of the Ancient Mariner," que will understand most of the water, 97% of it is undrinkable because it is salty (see illustration on next page). Only 3% of the world's water is freshwater, and 77% of that is frozen. 23% of this water is not frozen que, only 0.5% is available to Provide the amount of water que every plant, animal and person on earth needs to survive [source: National Geographic (em Inglês)].

Then the water is pretty simple, right? In fact, there are many things about it que scientists still do not understand completely. And the problem of the que Ensuring sufficient amount of clean drinking water is available to all who need it is far from simple. In this article, we take a look at some of These problems. Also we'll explore exactly what plants, animals and people in the water with and learn more about what makes water so special.

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