Chemical bond Essays

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    Mariel Beauroyre 9-B A chemical bond is form with the joining of two or more atoms (when two atoms are joined they form molecules and compounds.) Which are being held together by the attraction (force attraction) of atoms through sharing as well as exchanging electrons. Chemical bonds are found in molecules, crystals, or in solid metals. They also organized the atoms in order structures. But why are they important you may ask? They’re important because every material or substance in the world

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    Chemical bonds are really important to todays scientist. But, what are the three most important chemical bonds? A chemical bond is an atomic attraction between molecules by sharing electrons between two atoms or a transmission of electrons. The three major chemical bonds are the following ionic, covalent, and hydrogen bonds. An ionic bond is a transfer of valence electrons between two atoms. An example of this bond would be Sodium Chloride or (NaCl). Ionic bonds are high polarity, no definite shape

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    issue articles regarding the nature of the chemical bond. He explored into the nature of the chemical bond and its appliance to the clarification of the structure of complex substances. By working on the nature of the chemical bond, Pauling presented the idea of orbital hybridization. In chemistry, hybridisation is the concept of intermingling atomic orbitals into new hybrid orbitals suitable for the pairing of electrons to form chemical bonds in valence bond theory. Pauling also studied the correlation

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    1.3 Organosilane [66] Monomeric silicon chemicals are known as silanes and any chemical that contains at least one carbon-silicon bond is known as an organosilane. Generally, organosilanes contain three key elements beside silicon; X represents for an organic moiety that is non-hydrolysable which can be either reactive or non-reactive depending on its type. OR\ is a hydrolysable group such as alkoxy or an acetoxy is known to be unstable when present with hydroxyl groups. Finally, R is a space

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    the distance of bond and angle of bond are present. The degree of distortion with respect to the beta phase can be related to the tetrahedral tilt angle and the intertetrahedral bridging angle. While for tetrahedral tilting, there is only change in the angle of the bond and no change in bond distance. When there is an increase in temperature, the Fe-O-P bridging angles increases and the tetrahedral tilt angles decreases. As the temperature increases from 294K to 1073K, Fe-O bond distance decreases

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    family had to move back to Portland and live in poverty. As a result of his family’s poverty, Linus had to work various jobs to help the family and eventually he had to drop out of high school. At fifteen Linus had already knew that he wanted to be a chemical engineer but did not have to money to become one. What made him want to be one was when he was thirteen his friend Lloyd Jeffress suggested he take a detour on his way home from school

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    Essay On Aromaticity

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    Aromaticity can be termed as a chemical property of conjugated cycloalkenes. Aromaticity deals with the uncommon stability of benzene and its derivatives, which is caused by the ability of the electrons in the p-orbitals to delocalize and act as a framework to generate planar molecules. A molecule is only considered aromatic due to the fact that it is cyclic, that it follows the Huckel’s Rule and lastly that each element must have a p-orbital. Antioxidants play and important role in health. It can

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    Chemical Structure of Isotactic Polypropylene Isotactic Polypropylene has a simple molecular structure. It contains a carbon ‘backbone’ chain whereby carbon is bonded to carbon atoms in a polymer chain, carbon is bonded to hydrogen atoms and methyl groups. (CH3). All the methyl groups are positioned on the same side of the chain, resulting in a regular and uniform structure of polymer. Polypropylene forms the head to tail structure through polymerization. There is strong covalent bonds between

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    2-dichloroethylene which contains a double bond between the two carbons. Although a stable compound at room temperature, it does slowly decompose in the presence of oxygen and UV light turning a darker colour, and at temperatures above 340 oC it begins to decomposes forming vinyl chloride & HCL Ullmann’s & http://www.cdc.gov/niosh/npg/npgd0271.html . Table 1 lists the basic physical and chemical properties on ethylene dichloride. Table 1: Physical and Chemical Constantshttps://pubchem.ncbi.nlm.nih

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    The isomers which can be inter converted solely by rotation about formally single bonds in a form of stereoisomerism in chemistry studies are defined as conformational isomers. This phenomenon in chemistry is called as conformational isomerism. Conformational isomers are stereoisomers which arise from the rotation about sigma (σ) bond (single bond). It is usually fast interconverting in room temperature, causing in different arrangements of atoms in three-dimension space. The isomers which created

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    5-membered rings containing heteroatom11 One hetero atom11 Figure 1.3: Structure showing the heterocyclic compound having one hetero atom Two hetero atoms Figure 1.4: Structure showing the heterocyclic compound having two hetero atoms 6-membered ring containing heteroatom11 Figure 1.5: Structure showing the six membered heterocyclic compounds Unsaturated and saturated heterocyclic compound12 Figure 1.6: Structure of saturated and unsaturated heterocyclic compounds 1.7 AZOLES Azoles

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    Structural Features Acetaminophen is a molecule that is made of twenty atoms; its bonds consist of fourteen single bonds and four double bonds. Acetaminophen is also composed of clusters atoms with groups with names. First of all, part of an acetaminophen atom is a benzene ring. A benzene ring is a ring of six carbon atoms that are connected to each other by three double bonds and three single bonds and unusually all the bond are the same size. In addition, to make sure all the electrons in the outer valence

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    Conformational isomerism is actually an isomerism that rotates free around single bond. Stereoisomers which can be converted into one another by the twisting of a central carbon-carbon σ bond are called as conformational isomers and sometimes they frequently interconverting rapidly at room temperature. Hydrocarbon alkanes usually present conformation isomerism due to the presence of C-C bonds. C-C σ bonds rotate to give different shapes to a molecule like eclipsed form, staggered and anti form, and

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    Pyridine Lab Report

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    Chemical properties Pyridine is miscible with water and virtually all organic solvents.[10] It is weakly basic, and with hydrochloric acid it forms a crystalline hydrochloride salt that melts at 145–147 °C.[25] Most chemical properties of pyridine are typical of aheteroaromatic compound Molecular properties Pyridine has a conjugated system of six π electrons that

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    Summary for the H3O+ in the Birnessite (H-Bir) The presence of H3O+ in birenssite had been reported by Johnson1. In this paper, the author discussed that the hydrogen birnessite contained structural water and either hydroxyl hydronium (H3O+), or both. Interlayered H2O molecules inside the birnessite play an important role to the structure. The interlayer H2O is strongly bound to the interlayer molecules, like Na+, K+ or H+. Typically, the H-Bir could be synthesized vial by a co-precipitation method

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    (-N=) [1,2]. There are three known isomers: 1,2,4-oxadiazole (2), 1,2,3-oxadiazole (3) and 1,2,5-oxadiazole (4). However, 1,3,4-oxadiazole and 1,2,4-oxadiazole are better known, and more widely studied by researchers because of their many important chemical and biological properties. Among heterocyclic compounds, 1,3,4-oxadiazole has become an important construction motif for the development of new drugs. Compounds containing 1,3,4-oxadiazole cores have a broad biological activity spectrum including

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    Chemical processes only change the sulfur bond. A hair strand is a group of hairs that consist of 3 to 5 hair fibers. A normal head of hair has about 100 to 150 thousand hair fibers. Lighter color hair usually has more hair fibers than darker colored hair while red hair has the fewest. Paper is twice as thick as the width of a hair fiber. The living portion of hair sits below the surface of the scalp. Each hair fiber sits in a bulb that provides nourishment and natural emollient or oil. Healthy hair

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    A typical halogen bond is denoted by the three dots in R–X…Y. R–X is the halogen bond donor, X is any halogen atom with an electrophilic (electron-poor) region, and R is a group covalently bound to X. In some cases, X may be covalently bound to more than one group. It may also form more than one halogen bond. Y is the halogen bond acceptor and is typically a molecular entity possessing at least one nucleophilic (electronrich)

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    Hydrogen Sulfide undergoes covalent bonding – where two or more non-metal atoms are held together by one or more shared pairs of valence electrons. The atoms forming a covalent bond must have a relatively equal attraction for electrons (electronegativity). Hydrogen has an electronegativity of 2.2 and sulfur of 2.58. Covalent bonds tend to also have low melting and boiling points due to weak intermolecular forces which break down quite easily (BBC, 2014). Substances that are bonded covalently are also

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    Objective #1 Compare the differences between ionic and covalent bonding and how molecules are formed by either ionic or covalent bonds. IONIC BONDING: Ionic Bonding is the complete transferring of valence electrons between two atoms. This type of chemical bonding results in two oppositely charged ions, a cation and an anion In ionic bonding the electrostatic attraction between the charged ions holds the compound together. Example: Bonding of Sodium and chlorine. 1s2 2s2 2p6 3s1

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