BIOL 112 Lecture Notes - Lecture 1: Surface Tension, Covalent Bond, Electronegativity
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BIOL 112 Full Course Notes
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*lab coordinator: anne-marie l"heureux* stewart bio building room w4/9 : Post-lab summary = no marks, needed for atendance. For each lab, print: lab exercise text, pre-lab summary, post-lab summary (none needed for lab 1) Covalent bond rules: a covalent bond is always made of 2 es, these 2 es are shared, atoms can form bonds unil their outermost shell is illed. Structural: h-c-h (with 2 more h"s up and down) Non-polar covalent bond in h molecule: e;s are shown to be superimposed on the bond to indicate that they are halfway between the 2 atoms & shared equally. Polar covalent bond in h2o molecule: es are not shared equally (o (s-) is more electronegaive than h (s+)), so parial charges exist on the o & h atoms (ex. Concept: electronegaivity: h
