BIOL 112 Chapter Notes - Chapter 2: Chemical Polarity, Unpaired Electron, Relative Atomic Mass

49 views6 pages
hans15149 and 39222 others unlocked
BIOL 112 Full Course Notes
27
BIOL 112 Full Course Notes
Verified Note
27 documents

Document Summary

Chapter 2: small molecules and the chemistry of life. Living world is composed of same set of chemical elements as rest of universe. All matter is composed of atoms -> has nucleus (protons and neutrons) and electrons. All matter has a volume and mass. Mass of proton serves as a standard unit of measure called dalton (da) or atomic mass unit (amu) One proton/neutron = 1 da or 1. 7x10^-24 grams. One electron = 0. 0005 da or 9x10^-28. Electrons determine how atoms will combine with other atoms to form stable associations. Neutron has a 0 unit of charge (is neutral) Atoms are electrically neutral b/c number of electrons equals number of protons. Atoms are often represented by a bohr model - it is inaccurate b/c it exaggerates the space occupied by nucleus and it. An element consists of only one kind of atom. Distinguishable properties include their mass and how they interact with other atoms.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions