BISC 220Lg Lecture Notes - Lecture 1: Intramolecular Force, Electronegativity, Chemical Equilibrium
15 Jan 2016
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Biology 220: introduction to biochemistry, covalent bonds: sharing electrons i. These shared electrons are located in an atoms valence shell the outermost layer of electrons. Electronegativity determines the distribution of electrons within the atom. This is important to magnify the attractive force of an atom: electronegativity may also be defined as the attraction of a iii. particular atom for the electrons of a covalent bond, polarity. Nonpolar: there is equal distribution of charge between atoms. Polar: there is unequal distribution of charge between atoms. i. ii: ionic bonds: transferring electrons i. The attraction due to opposite charges: ph: most biological processes occur at a ph of 7 (neutral ph) 7-14: basic i. ii: chemicals of life: O, c, h, n (96% of living matter) Fe and i are examples of trace elements i. ii. iii. Matter has a natural tendency to move to the lowest state of energy.
