HHP 1300 Lecture Notes - Lecture 2: Covalent Bond, Chemical Polarity, Chemical Bond

• School: University of Iowa
• Department: Health and Human Physiology
• Course: HHP 1300
• Professor: Flanagan

Document Summary

Chemistry in physiology: physiological requires some familiarity with basic chemistry, atomic and molecular structure, chemical bonds, ph, organic compounds. Atoms: atom= smallest unit of an element, made up of three basic subatomic particles, protons- positively charged, =atomic number, neutrons- neutrally charged, electrons- negatively charged particles, circulating around nucleus. Chemical bonds chemical bonds- interactions of valance electrons types of chemical bonds: covalent- share valence electrons (strongest) ionic, hydrogen, molecules, structure consisting of atoms bound together by chemical bonds. H2: unequal charge between different regions of the molecule. Dissociation of ionic compounds ionic bonds can dissociate in water: water attraction electrostatically. Water: polar molecule, good solvent (substances dissolve in it, can form hydrogen bonds, polar molecules (covalent bonds) may dissolve in water and are called hydrophilic, nonpolar molecules do not dissolve in water and are called hydrophobic. Water solubility: hydrophilic, water soluble, polar molecules and ions, hydrophobic, water insoluble, nonpolar molecules. Index of [h+] in a solution: neutral ph= 7.