BIOL130 Lecture Notes - Lecture 14: Chemical Polarity, Bond Length, Acid Strength
20 Apr 2017
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Document Summary
The chemistry tht sustains life must obey the same physical principles as non-living matter. C, h, o, n make up 99% of all matter found in living orgs: biological reactions are driven by tendency of atoms to. Fill outer shells: balance +(cid:859)(cid:448)e and (cid:858)(cid:448)e charges. Covalent bonds- 2/ more atoms share pairs of valence e- Strong bonds of biological systems: non- covalent bonds. Ionic bonds: h-bonds, hydrophobic interactions, molecule group of atoms held together by energy in a stable association. Compound molecule composed of 2 or more diff types of atoms. Types of covalent bonds e- shared equally - non-polar covalent diatoms e- not shared equally - polar covalent bond one atom has stronger electronegativity. Water: most abundant molecule in bio orgs human body 70, dissolve more types of molecules than other molecule known. Its polarity key: h-bonding electrical attraction b/w electronegative atom and partial positive of hydrogen.
