BMB 207 Lecture Notes - Lecture 15: Boiling Point, Vaporization, Covalent Bond
3 Oct 2016
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Document Summary
The amount of heat required to mels one grams of a solid substance. Transition of a substance from a liquid state to a vapor state. Positive and negative bonds between ions cause the molecule to be solid at room temperature. Weak bonds that are treated energetically like covalent interactions, except associated energy values are smaller. Making bonds releases energy from a system. Breaking bonds requires an input of energy into a syste. The attraction between molecules is always weaker than the attraction between ions. Primarily significant for molecules that contain n or o. All molecules are attracted to one another because the electrons of each molecule are attracted to the protons of the nuclei of nearby molecules. The attraction between nonpolar molecules is called dispersion forces. Any molecule that contains o-h or n-h covalent bonds will form hydrogen bonds under the appropriate conditions. Hydrogen doning is not directly related to the covalent bonding of hydrogen atoms in compounds.
