×
Log in to StudySoup
Get Full Access to UT - BCH 369 - Class Notes - Week 3
Join StudySoup for FREE
Get Full Access to UT - BCH 369 - Class Notes - Week 3

Already have an account? Login here
×
Reset your password

bch 369

bch 369

Description

School: University of Texas at Austin
Department: Biochemistry
Course: Fundamentals of Biochemistry
Professor: Gail grabner
Term: Spring 2015
Tags:
Cost: 25
Name: Lecture_3.pdf
Description: Lecture 3 NOTES
Uploaded: 01/28/2017
2 Pages 93 Views 0 Unlocks
Reviews



What is happening in covalent bonding?




What element has the highest number of atoms?




What element has the highest mass percent?



Lecture 3 What element has the highest mass percent? What element has the  highest number of atoms? This is for cells. - O (because there is so  much water in cells-makes 60-70% of cells) H Water is a molecule with ____________________. The differences in O and  H electronegativities establishes a strong bond. - covalent bonding What We also discuss several other topics like joshua stevenson unr
If you want to learn more check out 0.0034 in scientific notation
We also discuss several other topics like jmu social work
Don't forget about the age old question of cynthia vejar
We also discuss several other topics like How much “reconstruction?
We also discuss several other topics like interventricular sulcus function
is happening in covalent bonding? - atoms share outer shell  electrons to completely fill each atoms outer shells What happens in ionic bonding? - electrons are transferred from one  atom to the other to complete filled outer shells and create oppositely  charged ions Metals in biological systems will be _______ and associated with  _______________. - cations, anions (like Cl-) What is the angle of of the H-O-H bond in water? - 104.5 **Know how to draw dipole of water molecule** -  Permanent dipoles are designated by u and are expressed in  ________________. - Debye units (D) Why does water readily dissolve polar compounds? - The compounds  have partial charges which the water interacts with through  electrostatic interactions and H bonding. How does water dissolve salts? - Water interacts with electrostatic  interactions. The water/cation and water/anion interactions are  stronger than the interactions within the anhydrous salt.  **be able to draw hydration shells** Water has a ___________ structure. - tetrahedral The structure of H20 is conducive to ________________, when the  hydrogen atom interacts with an electronegative atom of another. H20  can associate w/ ____ other H20. - H bonding, 4 (be able to draw this  structure) What is the difference between how H20 bonds in liquid water and in  ice? - In liquid water, H-bonding is not complete due to irregularity of liquid water structure. In ice, a regular crystal structure is present and  H-bonding is complete. This makes density less than that of liquid  water.  water= 3.4 H-bonds/water molecule ice= 4 H-bonds/water molecule The hydrophobic effect that causes nonpolar molecules to condense is  an ______________-driven process connected to water release. - entropy **Look at diagrams in notes** An acid is _____________ while a base is a _______________. - proton  donor, proton acceptor Ka is the - acid dissociation constant Many biological molecules are _________________ . - weak acids Covalent bond strength is related to differences in _______________. -  atom electronegativities, distance between outer shell electrons and  nucleus and nucleus charge What forms around ions when water is dissolving salts? - hydration  shells of water molecules surround the ion Water can form H bonds with how many other water molecules? - 4 H bonds are _________ with a defined length of ___________ A between  the oxygens. - linear; 2.8-3 Why is the hydrophobic effect favored entropically? - when a np  molecule associates with another np molecule, this release the  constrained water molecule that was previously ordered at the surface  of the molecule. The pKa corresponds to the pH at which _____________. - half the acid is  protonated

Page Expired
5off
It looks like your free minutes have expired! Lucky for you we have all the content you need, just sign up here