Fluorine: Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. (Chemistry) [100%] 2021-12-22 [Chemical elements] [Halogens]...
Fluorine: Fluorine is a chemical element, typically found as a gas in its elemental form. It has the chemical symbol F, atomic number (number of protons) Z = 9, and a standard atomic weight of 18.9984032 g/mol. [100%] 2023-10-22
Fluorine: Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. [100%] 2023-10-26 [Fluorine] [Chemical elements]...
Fluorine: Fluorine is the lightest member of the halogen elements, or Group VIIa of the periodic table. It is also the most reactive chemical element. [100%] 2023-02-24
Fluorine: Fluorine is the element of atomic number 9, the lightest of the halogens. Fluorine is an interesting element - it's extremely reactive, and it explodes a lot (in the right circumstances). [100%] 2023-12-15 [Elements] [Water fluoridation]...
Fluorine: Fluorine (chemical symbol F, atomic number 9) is a nonmetal that belongs to a group of chemical elements known as halogens. Chemically, it is the most reactive and electronegative of all elements. At ordinary temperatures and pressures, pure fluorine is ... [100%] 2023-02-03
Fluorine: Fluorine (symbol F, atomic weight 19), a chemical element of the halogen group. It is never found in the uncombined condition, but in combination with calcium as fluor-spar CaF2 it is widely distributed; it is also found in cryolite ... [100%] 2022-09-02
Minerals: MINERALS min'-er-alz. See METALS; STONES, PRECIOUS. min'-er-alz. See METALS; STONES, PRECIOUS. [98%] 1915-01-01
Minerals: Minerals are naturally occurring chemical compounds, usually of crystalline form and not produced by life processes. A mineral has one specific chemical composition, whereas a rock can be an aggregate of different minerals or mineraloids. [98%] 2024-01-03 [Mineralogy]
Fluorite: Fluorite (also called fluorspar) is a mineral composed of calcium fluoride (chemical formula CaF2). It is present in large deposits in many parts of the world and occurs in a wide variety of colors, including blue, purple, red, yellow, green ... [87%] 2023-02-04
Fluorite: Fluorite (also called fluorspar) is a mineral composed of calcium fluoride (chemical formula CaF2). It is present in large deposits in many parts of the world and occurs in a wide variety of colors, including blue, purple, red, yellow, green ... [87%] 2023-02-04
Fluorene: Fluorene (α-diphenylene methane), C13H10 or (C6H4)2CH2, a hydrocarbon found in coal-tar. It is obtained from the higher boiling fractions, after separation of naphthalene and anthracene, by fractional distillation, the portion boiling between 290-340° C. The fluorene is ... [87%] 2022-09-02
Fluorene: Fluorene, or 9H-fluorene, is a polycyclic aromatic hydrocarbon. It has the form of odorless white crystals. [87%] 2023-09-23 [Molecular electronics] [Polycyclic aromatic hydrocarbons]...
Fluoride (patient information): Template:Drug header Fluoride is used to prevent tooth decay. It is taken up by teeth and helps to strengthen teeth, resist acid, and block the cavity-forming action of bacteria. (Patient information) [87%] 2023-04-21 [Musculoskeletal Drugs]
Fluoride: Fluoride (F) is the mildly toxic ionic form of the element fluorine. It is a common additive to toothpaste, mouthwash, and city water throughout the developed world. [87%] 2023-03-01 [Ions] [Health]...
Fluorene: Fluorene /ˈflʊəriːn/, or 9H-fluorene is an organic compound with the formula (C6H4)2CH2. It forms white crystals that exhibit a characteristic, aromatic odor similar to that of naphthalene. (Chemistry) [87%] 2023-12-17 [Molecular electronics] [Fluorenes]...
Fluorite: Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. (Chemistry) [87%] 2025-04-25 [Cubic minerals] [Minerals in space group 225]...
Mineral (nutrient): In the context of nutrition, a mineral is a chemical element. Some "minerals" are essential for life, most are not. (Nutrient) [84%] 2024-01-12 [Dietary minerals] [Essential nutrients]...
Mineral: The molecules of a mineral usually are arranged in a regular pattern, and may grow in a regular, visible, crystalline structure. When they do, they are often beautiful in appearance. [84%] 2023-03-14 [Mineralogy] [Soil]...
Mineral: In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form. The geological definition of mineral normally excludes ... (Earth) [84%] 2024-01-12 [Minerals] [Mineralogy]...
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