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 molecule - Definition 

Molecule (4075 bytes)
1: ...iple atoms, but in practice the use of the word ''molecule'' is usually confined to [[chemical compound]]s, ...
3: A substance that consists of molecules is a ''molecular substance''.
7: ... eye, but there are exceptions. [[DNA]], a [[macromolecule]], can reach [[macroscopic]] sizes.
9: ...] has the same ratio as ethanol, for instance. [[Molecules]] with the same [[atom]]s in different arrangeme...
11: ...reflects the exact number of atoms that compose a molecule. The [[molecular mass]] is calculated from the c...

Fuel molecule (152 bytes)
1: A '''fuel molecule''' is a molecule metabolized by a cell to generate [[Adenosine tri...

Water (molecule) (21619 bytes)
10: ...olecule dimensions.png|150px|A diagram of a water molecule, with dimensions]]
84: ...n|H]]<sub>2</sub>[[oxygen|O]], meaning that one [[molecule]] of water is composed of two [[hydrogen]] [[atom...
91: ...47 [[Kelvin|K]] and 22.064 [[pascal|MPa]]), water molecules assume a ''supercritical'' condition, in which l...
144: ...t. This process is called [[electrolysis]]. Water molecules naturally disassociate into H<sup>+</sup> and OH...
147: ...the relatively negative areas) and to other polar molecules. This attraction is known as [[hydrogen bond]]in...

Hypervalent molecule (1736 bytes)
1: ... first defined by Jeremy I. Musher in [[1969]] as molecules of the elements of group 15-18 in any [[oxidatio...
3: Since the hypervalent molecules do not seem to obey the [[octet rule]], some mod...
5: As another description of hypervalent molecules, modifications of the octet rule have been attem...

Molecule editor (1379 bytes)
1: ...sional]] molecule editors for the construction of molecule models, usually as part of [[molecular modelling]...
3: ...ion|SMILES]], a short [[ASCII]]-representation of molecules.
5: ...h are often realized as small [[applet]]s to show molecules in web pages.
7: ==Molecule editors==
20: * [[Molecule viewer]]

Non-Kekulé molecule (2846 bytes)
1: ... use. Synthesis and observation of these reactive molecules are generally accomplished by [[matrix-isolation...
3: ==Classification of non-Kekulé molecules==
4: ...s of ''non-disjoint'' and ''disjoint'' Non-Kekulé molecules]]
5: ...omes much smaller than with ''non-disjoint'' type molecules, and therefore the relative stability of the [[s...
8: ...TMM or TME. TMM was the first observed non-Kekulé molecule found in [[1966]] by Paul Dowd. Non-Kekulé quinod...

Signaling molecule (1082 bytes)
1: Nitric oxide is a quite salient signaling molecule, instrumental in both learning and memory.
3: ...re enthralled with the potential benefits of this molecule.
7: ... vascular endothelium, and since its is a gaseous molecule, it diffuses across the membrane and impacts the ...

Odd molecule (672 bytes)
1: ...e containing an odd number of [[electron]]s. Such molecules, except those containing [[transition metal]]s, ...
4: *"The Atom and the Molecule", Gilbert N. Lewis, ''Journal of the American Che...

Polyatomic molecule (1689 bytes)
1: ...metal]]s; in fact, most nonmetals form polyatomic molecules. The majority are [[diatomic]]. These elements ...
3: These are the most common polyatomic molecules:
15: ...s in them, they can also be considered polyatomic molecules.
18: ...s, so an x is used. For silicon and carbon, the 2 molecule form is explosively unstable (because a quadruple...

Bicyclic molecule (92 bytes)
1: The [[structure]] of a '''bicyclic''' [[molecule]] contains two usually [[fused]] [[ring]]s.

Polar molecule (987 bytes)
3: ...arge|charge]] distribution do not converge. These molecules are characterized by a [[dipole moment]] which m...

Intramolecular (516 bytes)
1: ...omenon limited to the extent of a single, or each molecule.
4: ...ride ion from one part to another within the same molecule);
5: ... formed between two functional groups of the same molecule)
8: See also: [[intermolecular]], [[molecule]]

Intermolecular (431 bytes)
1: ...e; a property or phenomenon that extends from one molecule to another.
4: ...rogen transfer (transfer of a hydogen atom from a molecule to another);
5: ...ntermolecular repulsion (repulsion forces between molecules)
7: See also: [[intramolecular]], [[molecule]]

Chirality (chemistry) (1940 bytes)
1: ...ing as long as a bond is not broken to change the molecule.
3: ...bon, outlining two perpendicular planes. For this molecule it is possible to write two enantiomers lacks a c...
5: ...ral molecules, enantiomers (optical isomers), and molecules with chiral atoms is part of the science of [[st...

Dendral (735 bytes)
1: ...d of spectrum it will give. But identifying a new molecule from its spectrum is not easy.

Fluorescent tag (406 bytes)
1: ...attached. The tag is some kind of [[fluorescent]] molecule (also known as [[fluorophore]]). [[Fluorescein]] ...

Affinity chromatography (577 bytes)
1: ...e composition of the medium in which a particular molecule resides.

Skeletal formula (245 bytes)
1: ...not necessarily display the [[element]]s within a molecule.

Isomerase (342 bytes)
1: ...ging the [[functional group]]s and converting the molecule into one of its [[isomer|isomeric]] forms. They ...

Cohesion tension (569 bytes)
1: ...positively charged hydrogen atom in another water molecule.
3: ...ydrogen bond forming a continuous string of water molecules up to the leaf.
5: ...ost by Transpiration in the leaf. When one water molecule is lost another is pulled along. Transpiration p...

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "molecule".