A fatty acid has a carboxylic acid on a long chain of carbon atoms. The carboxylic acid may also be called the carboxyl functional group. Fatty acids are a major source of energy for the cell. Compounds called phospholipids are created from fatty acids.
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Symbol:"Fm" Atomic Number:"100" Atomic Mass: (257)amu. Fermium is one of the elements in the actinide series of inner transition elements. It may also be classified as a rare earth element. It is a radioactive and unstable element and you will not find it in use anywhere. The element was named after the physicist Enrico Ferme.
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A field specimen is a sample taken from outside of the lab. This could refer to a piece of rock, plant life, or an organism.
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Filtrate is the solid substance remaining after you remove the liquid of a solution. If you mix water and chalk, you can remove the chalk by filtering it out. The chalk left in the filter paper is called the filtrate.
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Symbol:"F" Atomic Number:"9" Atomic Mass: 19.00amu. Fluorine is member of the halogen group. Fluorine is a very reactive, poisonous gas. It is reactive because it combines with most other elements. You can also find it in rocket fuel, uranium refining, Freon, toothpaste, and etched glass.
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This notation tells you the number of atoms in one molecule of a compound. A formula is written with element symbols and numbers in subscript (like the "2" in CO2). The formula for salt is NaCl. The formula for water is CO2.
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The formula mass is the total atomic mass of a compound. You can determine the formula mass by adding the individual masses of each atom in the compound. The formula mass of NaCl is 58.44.
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A type of distillation that separates two substances with boiling points that are very close to each other. You increase the temperature in very small amounts.
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Symbol:"Fr" Atomic Number:"87" Atomic Mass: (223)amu. One of the alkali metal family. Francium is the heaviest of the alkali metals and is extremely rare in nature. It can be created in a lab and acts like cesium.
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Atoms that have a valence number of zero. Look to the noble gases for a valence number of zero.
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A temperature point when a liquid becomes a solid. The word congeal is also used to describe the process of a liquid becoming a solid.
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