Chemical substance - Wikipedia, the free encyclopedia
A chemical substance is a material with a specific chemical composition. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen w...
en.wikipedia.org/wiki/Chemical_substance
A chemically pure substance is a kind of matter that cannot be separated into other kinds of matter by any physical or chemical process. It has the same colour, taste, texture and composition at a given temperature and pressure. Edit: Matte...
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a substance is said to be pure if there are no foreign elements mixed up in the substance. a toothpaste is said to be 100% vegetarian if only vegetable matter is mixed to make it. gases like nitrogen are said to be pure if no other gaseous,...
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There are two types of pure substances. ... Elements are substances made of only one kind of atom. Oxygen, carbon, iron, potassium, aluminum, and helium are all examples of elements. There are 92 naturally occurring elements. At the close of 1999, there are 20 more elements which have been produced artifically in...
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pure substance (PureSubstance) ... pure substance is exhaustively partitioned into compound substance,elemental substance. ... is an instance of mixture, then there exist pure substance...
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A pure substance is a form of matter that has a definite composition and distinct properties. It may consist of only one type of atoms (examples: Fe(s), N2(g), S8(s)), or of only one compound where the atoms are connected in a defined way, (examples: FeS(s), CH4(g), NaNO3(s), H2O(l)).
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A form of matter that has both definite composition and distinct properties ... Science & Engineering Encyclopaedia Version 2.3 © 2001-2009 Dirac Delta Consultants Limited...
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A pure substance is defined as one that has a homogeneous and invariable chemical composition; it may exist at various temperatures and pressures or, to use the thermodynamic term, in various states.
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