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  • ...takes place is known as a [[condensation reaction]]. Phosphate [[chemical bond]]s are typically high-energy [[covalent]] bonds, which means that energy is
    6 KB (770 words) - 10:09, 20 September 2010
  • ...-)[[covalent bond]]s: [[Hydrogen bond]]s, [[Van der Waals bond]]s, [[ionic bond]]s, [[hydrophobic interaction]]s, [[pi-pi interaction]]s *[[Chemical extraction]] of target molecule and [[hydrolysis]] of [[covalent bond]]s
    4 KB (446 words) - 10:09, 20 September 2010
  • ...ence of valent cations in the solution will impede the polymers ability to bond with the water molecule.
    9 KB (1,214 words) - 10:09, 20 September 2010
  • ...em]] of bonds, [[carbonyl group]]s and so on. [[NMR spectroscopy]] detects hydrogen atoms in specific environments, and complements both IR and UV spectroscopy ...nown as [[ozonolysis]] when one molecule of the gas reacts with the double bond:
    7 KB (1,065 words) - 10:09, 20 September 2010
  • ...polymers can be linear or branched are typically joined with [[glycosidic bond]]s. However, the exact placement of the linkage can vary and the orientatio ...menon known as retrogradation is observed. This is a reorganization of the hydrogen bonds and an aligning of the molecular chains during cooling. In extreme ca
    68 KB (9,959 words) - 10:10, 20 September 2010
  • ...atalyzed carbocationic polymerization typically using aluminum chloride or hydrogen halide acid such as HF. So called "high reactivity" polybutene or PIB is pr One of the end units in the polymer chain contains a double bond, allowing reactivity with other compounds to provide functional chemistry m
    4 KB (554 words) - 10:10, 20 September 2010
  • ...stiffness]], the use of [[Chemical polarity|polar]] [[monomers]], and/or [[hydrogen bonding]] between the [[polymer]] chains can all enhance fire-resistance.<r ...om heat because the chains do not necessarily fall apart if one [[covalent bond]] is broken. However, this makes the processing of ladder [[polymers]] diff
    17 KB (2,260 words) - 10:10, 20 September 2010
  • ...astomer polymers is a weaker [[Intermolecular force|dipole]] or [[hydrogen bond]] or takes place in one of the phases of the material.
    11 KB (1,609 words) - 10:10, 20 September 2010
  • ...tself a [[polymer]] — containing [[silicon]] together with [[carbon]], [[hydrogen]], and [[oxygen]]. ...[[polyoxymethylene]] (a structurally similar polymer) due to its higher [[bond energy]].
    8 KB (1,198 words) - 10:10, 20 September 2010
  • ...ntEd 1998 v37 p75.jpg|thumbnail|250px|An example of a quadruple [[hydrogen bond]]s reported by Meijer and coworkers in Angew. Chem. Int. Ed. 1998, 37, p 75 ...bonding. One system that has been demonstrated uses quadruple [[hydrogen bond]]s to form supramolecular polymers.
    1 KB (131 words) - 10:10, 20 September 2010
  • ...eating [[structural unit]]s typically connected by [[covalent]] [[chemical bond]]s. While ''polymer'' in popular usage suggests [[plastic]], the term actua ...polysaccharide]]s (e.g. [[cellulose]]) are joined together by [[glycosidic bond]]s via oxygen atoms.
    45 KB (6,501 words) - 10:11, 20 September 2010
  • ...ial applications for [[metal-organic framework]]s (MOF's) in areas such as hydrogen storage. ...intermolecular force]]s tend to be weak, with a long equilibrium distance (bond length) compared to [[covalent bonds]]. The pi-pi interactions between [[b
    23 KB (3,302 words) - 10:11, 20 September 2010
  • ...to deposit [[crystal]]s. The viscosity arises from the multiple [[hydrogen bond]]s between the dissolved sugar, which has many [[hydroxyl]] (OH) groups, an
    7 KB (1,018 words) - 10:11, 20 September 2010
  • ...the [[repeating unit]]. Note, however, that the C−H [[Molecular geometry|bond angles]] are not 90° as this diagram would indicate, but are approximately ...tween the two systems is due to the ''opening up'' of the monomer's double bond upon polymerization.
    20 KB (2,802 words) - 10:11, 20 September 2010
  • ...p''<sup>3</sup> configuration, as opposed to graphene's ''sp''<sup>2</sup> bond configuration, thus graphane is a 2-D analog of cubic [[diamond]]. Graphan ...contrast to two-sided graphane.<ref name="Graphane"/> Annealing allows the hydrogen to disperse, reverting to graphene.<ref>[[Kostya Novoselov]]. "Beyond the w
    2 KB (265 words) - 10:12, 20 September 2010
  • |Hydrogen || 10 to 14% ...hydrogen, these processes generally involve removing carbon from or adding hydrogen to the molecules, and using [[fluid catalytic cracking]] to convert the lon
    69 KB (9,885 words) - 10:12, 20 September 2010
  • ...tions between the ions and the electron cloud, which are called [[metallic bond]]s.<ref name="morty">{{cite book| author = Mortimer, Charles E.|title = Che ...ae]]. The [[Sun]] and the [[Milky Way Galaxy]] are composed of roughly 74% hydrogen, 24% helium, and 2% "metals" (the rest of the elements; atomic numbers 3-11
    24 KB (3,311 words) - 10:13, 20 September 2010
  • [[Image:Metallic bond Zn.svg|thumb|right|200px|Metallic bonding is found in metals like [[zinc]]. ...title -->]</ref><ref>[http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/bond.html Chemical Bonds<!-- Bot generated title -->]</ref><ref>[http://www.phys
    26 KB (4,024 words) - 10:13, 20 September 2010
  • .../sub>)<sub>n</sub>; it contains the [[chemical elements]] [[carbon]] and [[hydrogen]]. Because it is an [[aromatic hydrocarbon]], it burns with an orange-yello ...ttach to form a polystyrene chain (with each carbon attached with a single bond to two other carbons and a phenyl group).
    36 KB (5,017 words) - 10:14, 20 September 2010
  • ...Lee KJ, Jeong HG |title=Protective effects of kahweol and cafestol against hydrogen peroxide-induced oxidative stress and DNA damage |journal=Toxicol. Lett. |v ...ulic acid]] and 3,4 dimethoxycinnamic acid which are connected by an ester-bond to the [[hydroxyl]] groups of [[quinic acid]] (1alpha, 3R, 4alpha, 5R-tetra
    29 KB (4,179 words) - 10:14, 20 September 2010

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