Category: N
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Normal solution
A solution concentration containing 1 gram-equivalent of a substance per liter of the solution. An obsolete term for a solution in which 1 L contains 1 g equivalent of the solute. The use of this terminology is discouraged in the SI system.
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Normal curve
The distribution of individual values with the average, median, and mode the same. Further, the standard deviation divides the range of the set of data into six equal parts. A symmetrical, bell-shaped curve that describes the probability of obtaining various combinations of chance events. The describes the frequency distributions of many physical and psychological attributes…
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Normal
Unless otherwise stated, refers to the property of being distributed in the form of a normal frequency distribution. In a usual way, according to rule. That which is socially accepted as the usual, normal behavior. Usual, ordinary or conforming to a standard. A term used in several different senses. Generally speaking, it is applied to…
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Noodle
A pasta product containing no eggs. According to my grade six teacher, the expression “use your noodle” came about because the brain resembles a big bowl of noodles (especially those thick, steaming noodles that the Japanese call udon). I was disabused of this comforting notion twenty-five years later upon discovering that noodle, meaning head, derives…
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Non-newtonian
Materials whose flow characteristics change with the rate of shear. Non-Newtonian liquids are usu- ally mixtures which are not chemically pure or physically homogeneous.
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Nitrosamines
Compounds which are formed from nitrates and other naturally present substances. May occur naturally and are usually concentrated upon cooking. End products of the combination of nitrites and nitrates with amines in meat have been shown to produce cancer in test animals. Formed outside or inside the body from precursors like amines, amides, and nitrites.…
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Nitrite
A salt of nitrous acid, usually sodium nitrite. Usually used with nitrates and other naturally present substances to cure meat to prevent spoilage. A kind of food additive, a common and controversial preservative in meats. Food additives used to protect processed foods against bacterial growth and to preserve color and flavor. Nitrites are chemical salts…
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Nitrate
A salt of nitric acid used to cure or preserve meat, especially ham. Saltpeter (potassium nitrate) has been used as a curing ingredient. A salt or an ester of nitric acid. A drug such as glyceryl trinitrate which dilates the vessels leading to the heart muscle and lowers cardiac work by reducing venous return to…
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Nicoise
A kind of salad made with potatoes and green beans, seasoned with oil, vinegar, salt and pepper, and arranged in a dome dish or pasta shell, and decorated with anchovies and garnished with tomatoes and sprinkled with chervil and tarragon. Transport your taste buds to the sun-kissed shores of Nice, the bustling coastal gem of…
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Newtonian
Refers to the flow of liquids. The viscosity of Newtonian liquids does not change with the rate of shear. Newtonian liquids are essentially chemically pure and physically homogeneous.