BIOL 1107 Study Guide - Quiz Guide: Monosaccharide, Starch, Peptidoglycan
Document Summary
When a covalent bond forms: electrons in valence shells are shared between nuclei. If a reaction is exothermic: the products have lower potential energy than the reactants. Energy source responsible for the formation of acetic acid in deep-sea hydrothermal vents: chemical energy present in the reactants. Thermal energy: the kinetic energy of molecular motion, measured as heat. Determine whether a chemical reaction is spontaneous or not: entropy and potential energy. Two models that have been proposed to explain the process component of chemical evolution: prebiotic soup model and surface metabolism model. Largest number of polar covalent bonds based on molecular formula: c2h4o2. Electronegativity of fluorine: f>o>h>na, one bond would form with sodium and it would be ionic. Atoms in the h2 and o2 have the same electronegativities, so they share their electrons equally in their covalent bonds. Co2 + h2o ch2o3 (reaction between carbon dioxide and water forms carbonic acid)
