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Topic: Single bond

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Double bond

Monounsaturated fat

	Chemical Bonding Concept/Skills Development (Site not responding. Last check: 2007-10-10)
		The covalent bond illustrated by the two friends sharing an ice cream cone is like a single covalent bond, sometimes called a sigma (s) bond.
		Bonding is a term commonly used in contexts other than in chemistry.
		The accused house burglar had to post a $5000 bond to appear in court.
	www.okstate.edu /jgelder/bondpage25.html (595 words)

	Bond (chemistry) - ninemsn Encarta
		When a bond is formed between atoms, energy is normally given out because the resulting compound is at a lower energy level, and therefore more stable, than the original atoms.
		The energy required to break a bond is called its bond energy (or bond enthalpy), and is a useful quantity when the stability of compounds is being studied.
		Covalent bonds are formed when atoms share electrons, one from each atom in a single bond, to form electron pairs, usually making their outermost shells up to eight electrons by this means.
	au.encarta.msn.com /encyclopedia_761563675/Bond_(chemistry).html (1649 words)

	Chemical Bonding
		A chemical bond is a mechanism that is used to chemically combine atoms.
		Bond Length is the average distance between the centers of two bonded atoms.
		Bond Order is the term used to distinguish between the number of bonds that exist between two atoms.
	www.bcpl.net /~kdrews/bonding/bonding.html (798 words)

	ChemViz Determination of Pi Bond Strength in the Ethene Molecule Lab
		Since single bond is longer than double bond, the bond length of C-C bond of ethene rotated at 90 degrees is expected to be longer than the bond length of C=C bond of planar ethene.
		In this lab the pi bond strength in the ethene molecule is determined by optimizing the carbon-carbon bond length during this transition.
		In this lab the bond length of C-C bond is increased, consistent with the loss of the pi bond attraction between the carbon atoms, at 1.34 and 1.46 Ångstrom units.
	chemviz.ncsa.uiuc.edu /content/lab-s-pibond.html (729 words)

	Chemical Bonding, Page 2
		A Covalent Bond is a bond formed by the sharing of one, two or three pairs of electrons by two atoms.
		The double bond is in between the triple bond and single bonds in terms of bond strength.
		Ionic bonding is the extreme case of polarity in that the large difference of electronegativities between the atoms has allowed one atoms to become fully positively charged while the second atom is fully negatively charged.
	www.bcpl.net /~kdrews/bonding/bonding2.html (938 words)

	C. A. Shea & Company, Inc.
		The 301 Bond Form is a multi-purpose document used for a range of activities from importing or operating a bonded warehouse to serving as a bonded truckmen or operating an international shipping fleet or airline.
		Single Transaction - Bond is usually completed for either an amount equal to the value of the merchandise plus the duty and other fees and taxes or, for certain merchandise as determined by U.S. Customs, an amount equal to three (3) times the value of the merchandise.
		Continuous - Bond amount is usually equal to 10% of the duty and other import taxes paid in the previous year, in multiples of $10,000 if the duties are less than $1,000,000 or multiples of $100,000 if the duties are over $1,000,000.
	www.cashea.com /custom_over.php (844 words)

	Double vs Single Bond Stability (Site not responding. Last check: 2007-10-10)
		If you will check the bond dissociation energies listed in your text, you will find that the C to C triple bond is stronger than the C to C double bond -- and it is in turn stronger than the C to C single bond.
		However, the triple bond represents a region of greater inter-atomic electron density than that of the double bond who's electron density is likewise greater than that of a single bond.
		The bond strengths in HC=-CH triple bond, H2C=CH2 double bond compared to a H3C-CH3 single bond (230 kcal/mol, 172 kcal/mol, 88 kcal/mol) is approximately in the ratio of 3~ 2~ 1.
	www.newton.dep.anl.gov /askasci/chem03/chem03155.htm (288 words)

	Covalent bond - Wikipedia, the free encyclopedia
		Covalent bonding is a description of chemical bonding that is characterized by the sharing of one or more electrons between two atoms.
		Early concepts in covalent bonding arose from this kind of image of the molecule of methane.
		Covalent bonding is implied in the dot and cross diagram that indicates sharing of electrons between atoms.
	en.wikipedia.org /wiki/Single_bond (1083 words)

	Bond Finance
		Bond proceeds generated by SFMRBs are mainly allocated to the Department's First-Time Homebuyer Program (the Single Family Finance Production Division manages the lending and distribution of bond proceeds after bond closing).
		The Financial Administration Division and the Bond Finance Division, particularly the Bond Compliance and Disclosure Manager, monitor the financial status of the bonds and performs all responsibilities of the Department in accordance with the bond covenants as stated in the bonds' legal documents created as part of the issuance process.
		The Bond Compliance and Disclosure Manager is also responsible for complying with the Securities and Exchange Commission rules relating to the disclosure of information with the issuance and ongoing reporting of activities of the bonds.
	www.tdhca.state.tx.us /hf_bond_finance.htm (1017 words)

	Single Bond Dental Adhesive System from Acute Care Pharmaceuticals - Restorative Dentistry Review - Dental compare
		Single Bond Dental Adhesive System is a light-activated, "one-component" dentin bonding agent recommended by the manufacturer for direct applications.
		The Single Bond adhesive does simplify the application process because it is both primer and adhesive resin in one bottle, with no mixing of components required.
		Although it is advertised as a "one-bottle" bonding agent, its use requires pre-application etching of enamel and dentin with a 35 percent phosphoric acid etchant.
	www.dentalcompare.com /review.asp?rid=75 (707 words)

	chemical bonding
		A single water molecule is made up of two atoms of hydrogen and one atom of oxygen.
		It is the bonds between atoms that give molecules different properties than the atoms they are composed of.
		A single bond is formed when 1 pair of electrons is shared; a double bond is formed when 2 pairs of electrons are shared; and a triple bond is formed when 3 pairs of electrons are shared.
	www.edinformatics.com /math_science/chem_bond.htm (301 words)

	13
		Molecules adjust their shape so that bonds (single, double and triple) and lone pair electrons are as far away from each other as possible.
		A bond in which such uneven sharing of electrons occurs is termed a polar covalent bond.
		The polar covalent bond is an intermediate between a purely covalent bond and an ionic bond.
	www.uoregon.edu /~ch111/L13.htm (576 words)

	Scott A. Williams, Wordsmith - Bond Laddering
		Since bonds are generally just one component of a balanced portfolio, investors with smaller portfolios may not have sufficient funds to invest in a bond ladder as well as other investments.
		Concentrating on long-term bonds exposes you to a higher risk of price fluctuations, but if you have the luxury of time, the higher yields on long-term bonds probably will outpace your return on a laddered arrangement, such as our example, with an average maturity of only 5.5 years.
		One significant advantage of bond funds over laddering individual bonds is that the strategy works with less money—as little as $7500 assuming three funds (short-, intermediate-, and long-term), each with a $2500 minimum initial investment.
	webpages.charter.net /scottawilliams/bondladdering.htm (1200 words)

	Bond and Mortgage Information
		For bond redemptions which are scheduled to occur in the future, the bonds to be redeemed have not been defeased, and such redemptions are subject to the availability of moneys to pay the redemption price and accrued interest thereon.
		For redemption funds held by a trustee pursuant to a general bond resolution, such general bond resolution may, under certain circumstances, require the use of such redemption funds for purposes other than the redemption of bonds.
		For bonds scheduled to be redeemed under an optional redemption provision, such bonds remain subject to redemption at par prior to the applicable optional redemption date, to the extent otherwise permitted, including for term bonds, from sinking fund installments.
	www.vhda.com /finance/bond.asp (257 words)

	Bond (CDK API - version 20060714)
		A bond is considered to be a number of electrons connecting a two of atoms.
		Clones this bond object, including clones of the atoms between which the bond is defined.
		- a descriptor the stereochemical orientation of this bond
	cdk.sourceforge.net /api/org/openscience/cdk/Bond.html (463 words)

	Ask the Expert: Safe muni bond funds - Aug. 28, 2002
		When you buy a bond, you are relying on the bond issuer's promise to make timely interest payments -- typically every six months -- and to repay principal when the bond matures, which can be anywhere from a few years to as long as 30 years.
		But the bond's market value can drop precipitously, often 40 percent or more, depending on what bond-market investors believe are the odds of the issuer eventually making good on some or all of its promises.
		When you buy a bond fund, you can mitigate credit risk quite a bit because the fund manager typically picks a diverse group of bonds, that is, ones offered by many different issuers.
	money.cnn.com /2002/08/28/pf/expert/ask_expert (1097 words)

	30
		As with carbon-carbon double bonds, carbon-carbon triple bonds are not free to rotate, but the concept of cis-trans isomers about a triple bond does not make sense.
		This is not the case, the c-c double bonds are all the same length in benzene.
		The pi-bonding electrons (see a picture of the pi-bonding in benzene) in benzene are said to be delocalized and it is this delocalization that gives benzene and related compounds their low chemical reactivity.
	darkwing.uoregon.edu /~ch111/L30.htm (740 words)

	Valence
		There are three ways that one atom of carbon can bond to another atom of carbon--by a single bond, a double bond, or a triple bond.
		A single bond has to be a sigma bond.
		The reason that carbon can only bond to hydrogen with a single bond is because the hydrogen has only one electron in its outer shell and therefore can donate only one electron to form a covalent bond.
	dl.clackamas.cc.or.us /ch106-02/valence.htm (261 words)

	Destructive and Non (Site not responding. Last check: 2007-10-10)
		Two tests are industry standards for establishing wire bond strength and the acceptability of part lots based on that bond strength.
		For cases where the die and the substrate bonds are at equal height (θ = 0 in Figure X below), or very flat, the pulling force is applied, by using a hook, approximately in the center of the wire in a direction normal to the die or substrate.
		If the bonds are not equal height, the bond pull shall be performed where the bend (loop) is formed between the two bonds.
	nepp.nasa.gov /wirebond/destructive_and_non.htm (875 words)

	Customs Bonds
		Customs Bonds (also known as Surety Bonds) are required by the U.S. Customs Service (Title 19 USC, section 1623) as a means to ensure that importers guarantee payment in the event that liquidated damages are assessed against shipments imported into the country.
		A bond is intended to protect the U.S. government in the event the importer cannot or will not fulfill their obligation to pay monies due.
		By purchasing a Shapiro Customs Bond, we are able to negotiate highly competitive rates for you as well as provide you with assurance that it is the appropriate type of bond at the appropriate rate.
	www.shapiro.com /html/CustomsBonds.html (402 words)

	Multiple Bonds (Site not responding. Last check: 2007-10-10)
		bond between the two carbons, there would be nothing stopping the atoms from rotating around the C-C bond.
		In addition to this rigidity, the C-C bond length is shorter than that expected for a single bond.
		The six carbon - carbon bonds are of equal length, intermediate between a single bond and double bond
	wine1.sb.fsu.edu /chm1045/notes/Geometry/Multiple/Geom06.htm (920 words)

	WWWFinance - Reported Bond Prices
		While it is possible to buy a single bond, they are usually sold in lots of 100.
		Bond prices reported in the financial press exclude the accrued interest of the current coupon period.
		Callable Bonds: Occasionally, a bond has a maturity date expressed as a range, for example: "August 1996-01." This means that the bonds may be redeemed at any time between August 1996 through August 2001.
	www.duke.edu /~charvey/Classes/ba350_1997/pricing/pricing.htm (774 words)

	Carbon-carbon Bond
		The carbon-carbon bond is what helps bring variety to organic compounds, especially the hydrocarbons.
		The energy required to break a mole of bonds is called the bond energy.
		Measure the six bond lengths and decide on the overall bond order in the benzene molecule.
	academic.pg.cc.md.us /~ssinex/struc_bond/carbon_carbon_bond.htm (173 words)

	Resonance (Site not responding. Last check: 2007-10-10)
		Because it takes more energy to break a double bond than a single bond, we say that a double bond is stronger than a single bond.
		Double bonds also have a shorter bond length, the distance between the nuclei of the two atoms in the bond, than single bonds do.
		Laboratory analyses show all three of the bonds in the nitrate ion to be the same strength and the same length.
	www.mpcfaculty.net /mark_bishop/resonance.htm (1194 words)

	TYPES OF COVALENT BOND-POLAR BOND-NON POLAR BOND-DOUBLE BOND-TRIPPLE BOND
		A covalent bond formed between two atoms by the mutual sharing of two electron pairs is called a "double covalent bond".
		A covalent bond formed by the mutual sharing of three electron pairs is called a "Triple covalent bond".
		A covalent bond formed between two different atoms is known as Polar covalent bond.
	www.citycollegiate.com /bondIXd.htm (242 words)

	covalent bonding - single bonds
		As well as achieving noble gas structures by transferring electrons from one atom to another as in ionic bonding, it is also possible for atoms to reach these stable structures by sharing electrons to give covalent bonds.
		Once again, the covalent bond holds the two atoms together because the pair of electrons is attracted to both nuclei.
		When a covalent bond is formed, the atomic orbitals (the orbitals in the individual atoms) merge to produce a new molecular orbital which contains the electron pair which creates the bond.
	www.chemguide.co.uk /atoms/bonding/covalent.html (1898 words)

	Single-Molecule Analysis of Human Immunodeficiency Virus Type 1 gp120-Receptor Interactions in Living Cells -- Chang et ...
		The time-dependent force applied on the bond between a gp120 molecule and a single cell receptor and the time-dependent deformation of the cell membrane-bound proteins are recorded simultaneously.
		Typical profiles of the time-dependent force acting on a gp120-CD4 bond under tension as a function of the time-dependent deformation of that bond are shown.
		(A) Typical force-distance spectra for the gp120-CCR5 bond in the presence of sCD4, gp120-CCR5/CD4, and gp120-CCR5 in the absence of sCD4.
	jvi.asm.org /cgi/content/full/79/23/14748 (5232 words)

	Force Spectroscopy of the Double-Tethered Concanavalin-A Mannose Bond -- Ratto et al. 86 (4): 2430 -- Biophysical ...
		FIGURE 6 The distribution of bond angles at the instant of bond rupture calculated using a freely jointed polymer model for each PEG, assuming monodisperse PEG lengths and full extension.
		For the simulation, the system included a single fixed-length tether on the AFM tip and a range of tether lengths (taken from the mass spectrometry data) on the substrate.
		Single molecule force spectroscopy in biology using the atomic force microscope.
	www.biophysj.org /cgi/content/full/86/4/2430 (4551 words)

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