BIOL 3755 Chapter Notes - Chapter 2: Molar Mass, Atomic Nucleus, Spontaneous Emission

12 views7 pages
27 Feb 2020
Department
Course
Professor

Document Summary

Chapter 2 chemical composition of body and its relation to physiology. 2. 1 atoms: atoms ~ units of matter that form all chemical substances, chemical elements ~ each type of atom. Atomic number: atomic number ~ number of protons in nucleus of atom. Atomic mass: atomic mass ~ value that indicates atom"s mass relative to mass of other types of atoms based on assignment of value of 12 to c atom. 2. 2 molecules: molecule ~ chemical substance formed by linking atoms together. Ionic bonds ~ strong electrical attraction between 2 oppositely charged ions. Hydrogen bonds: hydrogen bonds ~ weak chemical bond between 2 molecules or parts of same molecule in which negative region of one polarized substance is electrostatically attracted to positively charged region of polarized h atom in other. Ionic molecules: amino group ~ nh1; ionizes to nh3, carboxyl group ~ cooh; ionizes to carboxyl ion (coo-)

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