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Humans use water on a daily basis, in everything from drinking, to cleaning, and for recreational

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Humans use water on a daily basis, in everything from drinking, to cleaning, and for recreational uses in pools or waterparks. But the human body itself is the main contester in how it is used. Water is a dissolving essential in vitamins and nutrients for food and for delivering them to cells. Our bodies also use water to flush out toxins, regulate body temperature, and aid our metabolism. The human body is 50-75 percent water, and when that water is lost in digestion or sweat, it needs to be replenished to continue functioning. Dehydration is a common problem the human body faces, but too much water can also cause a great deal of complications. Water intoxication and hyponatremia, which is when electrolytes become diluted, can cause all …show more content…

Water has the highest surface tension, which is the attractive force exerted by the molecules below the surface on those at the liquid-air interface, which is why some light objects and substances can float on it. It has the highest known specific heat and is an effective solvent. Categories for water quality are salinity, acidity, temperature, oxygen content, and mineral content. Another confusing aspect to water is why hot water freezes faster than cold. There are many different conclusions to this observation, most commonly known as the Mpemba effect. One reason is that warm water evaporates rapidly, and since this is endothermic, it cools the water, making it freeze more quickly. Another theory focuses on the bonds of water, saying that hydrogen bonds bring water molecules into close contact, so the natural repulsion between the molecules causes the covalent O-H bonds to store energy. When the liquid warms, the hydrogen bonds and water molecules stretch. The covalent molecules shrink and give up their energy, so the covalent bonds giving up their energy is equivalent to a cooling process. Hard and soft water have many differences, caused from outside chemical properties affecting them. Hard water contains higher levels of dissolved minerals. Water that comes from underground aquifers comes in contact with certain minerals, and small amounts of these minerals are dissolved into an ionic

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