BIOL240 Lecture Notes - Lecture 15: Valence Electron, Ionic Bonding, Chemical Polarity

28 views8 pages
13 Feb 2018
Department
Course
Professor

Document Summary

Living organisms and the world they live in are subject to the laws of physics and chemistry: atomic structure determines the behavior of an element. See slide 2: atoms combine by chemical bonding to form molecules, atoms with incomplete valence shells can interact with each other by sharing or transferring valence electrons. General biology 1 (101-nya) lecture notes (lecture 2) Water: the medium of life: the polarity of water molecules results in hydrogen bonding. In a water molecule, two hydrogen atoms form single polar covalent bonds with an oxygen atom. Because oxygen is more electronegative than hydrogen, the region around the oxygen atom has a partial negative charge. The regions near the two hydrogen atoms have a partial positive charge. See slide 8: organisms depend on the cohesion of water molecules, the hydrogen bonds joining water molecules are weak; they form, break, and reform with great frequency.

Get access

Grade+
$40 USD/m
Billed monthly
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers
Class+
$30 USD/m
Billed monthly
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
7 Verified Answers

Related Documents

Related Questions