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Fluorine: Difference between revisions
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[[Image:Toothpaste.jpg|thumb|150px|right|Toothpaste]] | [[Image:Toothpaste.jpg|thumb|150px|right|Toothpaste]] | ||
Because of the special properties of Fluorine, it can be used for many purposes. Fluorine is excellent against the tooth decay. Fluoride covers teeth with thin layers, so it protects from forming cavities. In addition, many nations add Fluorine into the city water for disinfection. Fluorine is also used in the manufacture of Freon, which is used in the refrigerator. Unfortunately, freon fills the air with pollutants, and eats the [[Ozone]] layer. | Because of the special properties of Fluorine, it can be used for many purposes. Fluorine is excellent against the tooth decay. Fluoride covers teeth with thin layers, so it protects from forming cavities. In addition, many nations add Fluorine into the city water for disinfection. Crystals of calcium fluoride (CaF2), also known as fluorite and fluorspar, are used to make lenses to focus infrared light. Fluorine is also used in the manufacture of Freon, which is used in the refrigerator. Unfortunately, freon fills the air with pollutants, and eats the [[Ozone]] layer. | ||
== Isotopes == | == Isotopes == | ||
