Chemical bond

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  • Thermodynamics: Molecules

    nitrogen. Chemistry is concerned with the way atoms link together to form molecules, which are the natural chemical units of matter. Molecules represent the smallest particle of a chemical compound which retains the characteristics and chemical properties of the compound. With the rare exception of certain single atom molecules, almost all molecules consist of two or more atoms linked together. An atom of the violently active metal sodium (Na) linked to an atom of the poisonous gas chlorine (Cl), for instance, gives one molecule of common salt (NaCl) — an important body ingredient. Structure of the atom: There are two distinct regions to an atom. The first is a dense closely packed nucleus made up of protons and neutrons. Protons are positively charged and neutrons are neutral in charge. Together they make up much of the mass of the atom. They both have similar masses. Surrounding the nucleus are electrons. These are arranged in shells, or…

    Words: 1180 - Pages: 5
  • Origin Of Water On Earth Essay

    Understanding the fundamental characteristics of water is important for both scientific and practical reasons. Hence, this paper deals the origin of the water on Earth, molecular characteristics of water and chemical bonds, influences of temperature, conductivity and salinity, and water cycle and constituents. There are multiple theories about the origin of water on Earth, and all the theories suggest that the water come from outer space. The universe with all its extension has some common…

    Words: 780 - Pages: 4
  • Two Major Limitations Of Molecular Orbital Theory (MOT)

    in isolated atoms. This means that the VBT retains the individuality of the atoms composing molecule. The problem can be resolved by introducing the resonance theory, but with the loss of the original valence bond model. Hund[ 173], Mulliken[ 174], Van Vleck[175], Helsenberg[176], Jones[ 177] and others suggested an alternate treatment which is entirely different and more satisfactory. According to MOT, the valency electrons are considered to be associated with all the nuclei concerned. The…

    Words: 1014 - Pages: 5
  • Covalent Bonds With Other Nonmetals

    Covalent bonding occurs when atoms share pairs of electrons. Atoms will covalently bond with other atoms in order to gain more stability, which are gained by forming a full electron shell. By sharing their outer most valence electrons, atoms can fill up their outer electron shell and gain stability (Chem wiki) Nonmetals will readily form covalent bonds with other nonmetals in order to obtain stability, and can form anywhere between one to three covalent bonds with other nonmetals depending on…

    Words: 658 - Pages: 3
  • Influence Electrons

    Additionally, the shapes of NH3 and PH3 are quite similar, as they both use Trigonal Pyramidal (Four Subtituents) Geometry. NH3 would ultimately have a stronger attraction, due to nitrogen's higher level of electronegativity.This particular chemical compound is identified as Copper (II)…

    Words: 253 - Pages: 2
  • Essay On Alkanols

    Alkanols consist of three levels known as primary, secondary and tertiary. Primary alkanols occur when the hydroxyl group bonds with the first carbon atom of the chain. Secondary alkanols form when the hydroxyl group bonds with the second carbon atom of the chain and tertiary alkanols occur when the hydroxyl group bonds with the third carbon atom of the chain. Both primary and secondary alkanols can be oxidized however tertiary alkanols cannot (ausetute, NA). As the number of Carbon atoms in the…

    Words: 1461 - Pages: 6
  • Free Radicals: Detrimental To The Human Body

    Free radicals are molecules that have at least one unpaired electron. They are typically very reactive, due to their odd number of electrons. These molecules tend to try and gain or lose electrons so their highest energy levels can be filled. They will bond with other compounds in the body, sometimes combining with them, or even taking parts of intact molecules, resulting in even more free radicals (Walling). Free radicals can be formed by natural body processes, such as metabolism. They…

    Words: 398 - Pages: 2
  • Characteristics Of Intermolecular Forces

    They are responsible for physical properties of compounds such as crystal structures, melting points, boiling points, vaporization, viscosity and surface tension, but not the chemical behavior of the three states of matter; when a molecular substance changes states, the atoms within the molecule are unchanged. These properties can therefore be used in identifying an unknown sample by comparing for example its observed melting range with other known compounds. Similarly these properties can be…

    Words: 1875 - Pages: 8
  • Carbohydrates

    glucose units joined by glycosidic bonds. It contains two types of homopolysaccharides, amylose and amylopectin. A reducing sugar acts as a reducing agent because it has a free aldehyde or a free ketone group. It reduces another compound and is itself oxidized. The carbonyl carbon of the sugar is oxidized to a carboxyl group. Proteins Amino acids are the building blocks of proteins, linked together by peptide bonds to form a polypeptide. The general Structure is Each amino acid has a…

    Words: 1011 - Pages: 5
  • Comparison Of Organometallic Compounds

    contain at least one direct metal to carbon covalent bond are known as organometallic compounds many of these are thermodynamically unstable and are pyrophoric. The meta may belongs to main group, transition metal, f group metal or a metalloid i.e. selenium, boron, arsenic, silicon, antimony, germanium, and tellurium and the carbon moiety may be alkyl, alkene, alkyne, carbonyl, cyclic, heterocyclic or aromatic.1 Historical Background: In 1827, the discovery of Zeise’s salt, K[Pt(C2H4)Cl3], and…

    Words: 1461 - Pages: 6
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