BIOL 1107 Chapter Notes - Chapter 2: Electron Shell, Covalent Bond, Radionuclide
Document Summary
Based on # of protons in nucleus and distance between nucleus and valence shell. Reduce the impact of adding acids or bases on the overall ph of a solution: maintain homeostasis in cells and tissues, energy: the capacity to do work or to supply heat, potential energy - stored energy. Electron in an outer shell has more potential energy than an electron that"s closer to the nucleus: chemical energy - potential energy that"s stored in bonds, kinetic energy - energy of motion. After they would have condensed with rain and accumulated in oceans. Energy in the form of radiation/electricity was transformed into chemical energy: photons: packets of light energy, free radicals: photons break down relatively unreactive molecules into free radicals: very reactive since they have unpaired electrons in the outer shell. Sec 2. 5 : organic molecules: contain carbon bonded to other elements, carbon is the most versatile atom on earth, functional groups, amino.
