Hydrogen bond

our cells is double stranded � there are two strings of nucleotides that are joined primarily by hydrogen bonds between the strands. We mentioned earlier that hydrogen bonds, when considered as individual bonds, are very weak. However, when we consider hundreds of hydrogen bonds together, a relatively strong and stable structure can result. Nucleotides from one strand make two or three hydrogen bonds with complimentary nucleotides of the other strand, depending on the nucleotide pair. The two…

Reduction involves increasing the number of carbon hydrogen bonds by adding hydrogen across a double or triple bond which results in an increase in electron density at the carbon atom. Organic functional groups containing double and triple bonds which undergo reduction are unsaturated. The reduction of the double bond by addition of hydrogen atoms results in the product being fully saturated. Metal hydride reducing agents that have different reactivities toward specific functional groups are…

temperature. Water is a compound containing 2 hydrogen atoms, but also has an oxygen molecule as well this means it has the molecular formula of H2O. The relative atomic mass of water is around 18 with “11.188% being hydrogen and 88.182% being oxygen” [1]. When bonded it forms a covalent bond, “each hydrogen atom shares an electron with the oxygen atom” [2] but these electrons are not held in equilibrium. An oxygen atom attracts the electrons more than the hydrogen atom. This is because of the…

reaction between silver and hydrogen sulfide, producing silver sulfide and hydrogen gas. The balanced chemical equation is 2Ag (s) + H2S (g) → Ag2S (s) + H2. This is a single replacement reaction. This reaction most commonly occurs through contact with hydrogen sulfide in the air - although direct contact with substances that contain sulfur can cause tarnishing. Silver tarnishes very quickly when it is exposed to air that contains high levels of ozone, sulfur, or hydrogen sulfide. Silver…

These bonds occurs when a hydrogen atom is bonded to oxygen, nitrogen, and fluorine atom of another molecule, or when a hydrogen atom is electrostatically attracted to a lone pair of electrons on oxygen, nitrogen, or fluorine atom of another molecule.Therefore this essay aims at exploring the relationships between the…

have strong properties of hydrogen bonding. While we thought water wouldn't mix , we predicted Dichloromethane , n-Pentanol,Methanol,Toulene and Water to mix. Again our predictions were not exact in that water did not mix with any of the substances except Methanol. This again was due to water's strong properties of hydrogen bonding, resisting to interact with molecules that do not also have strong properties of hydrogen bonding. While n-Pentanol is capable of hydrogen bonding, in reference to…

able to fully dissolve in the water solvent, but corn oil did not (Figure1).The reason salts would dissolve into water solvent because water molecule carried partial positive charge on hydrogen atom and partial negative charge on oxygen atom; they could react with cation and anion from salts that have ionic bonds (Reece, etc. 2011). Therefore, salts such as sodium chloride magnesium sulfate would fully dissolve. Our data indicated that sodium chloride was not fully dissolved (Table 1), which it…

alcohol. In both pure water and pure ethanol the main intermolecular attractions are hydrogen bonds. The energy released when these new hydrogen bonds form approximately compensates for the energy…

and gas forms. All life on earth is dependent on there being water. Water (H2O) is a covalent bond which is made up for two hydrogens and one oxygen. Water has a different, almost special type of bond, called a polar covalent bond. It’s also important to know that hydrogen bonds stick together, the positive pole around the hydrogen atoms bond to the negative pole around the oxygen atom bonds, this bonds…

made up of three parts: protons (positively charged), neutrons (uncharged) and electrons (negatively charged). For example: Sodium ( ) has 11 protons, 12 neutrons and 11 electrons. 2. Molecule: Molecules form when two or more atoms form chemical bonds with each other. It doesn’t matter if the atoms are the same or are different from each other. For example: 3. Isotopes:…