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Hydrogen Bonding
Quiz 1
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Q.1
Determine the type of intermolecular force present in SiO2.
dipole dipole
Van Der Waals forces
ionic
covalent network
Q.2
A nitrogen molecule (Nhas how many covalent bonds between the 2 nitrogen atoms?
1
2
3
4
Q.3
Which substance would have the weakest intermolecular forces of attraction?
CH4
NaCl
H2O
MgF2
Q.4
Hydrogen bonding occurs in molecules when ___________________.
a hydrogen atom forms a covalent bond with another atom.
a hydrogen atom in a molecule forms a bond with any atom.
a hydrogen atoms form an ionic bond with another atom on an adjacent molecule.
a hydrogen atom bonded to F, O or N is attracted to an electron pair on a F, O or N atom on an adjacent molecule.
Q.5
All molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we can ignore London forces. Which of these has ONLY London forces?
I2
NH3
OCl2
SH2
Q.6
CHECK ALL THAT APPLY:Check all statements that are true of Van der Waals Interactions.
Very Weak
Brief Interactions
Occur when molecules are very close.
All of above
Q.7
CHECK ALL THAT APPLY:Electronegative atoms that are often involved in Hydrogen Bonds.
Nitrogen
Fluorine
Oxygen
All of above
Q.8
Hydrogen Bonds typically occur between atoms of hydrogen involved in this type of bond:
Ionic
Nonpolar Covalent
Polar Covalent
Nonpolar AND Polar Covalent
Q.9
TRUE OR FALSE:Hydrogen bonds are very strong interactions between two atoms.
True
False
Q.10
What instruments were used in this research paper?
Gas Chromatography
Mass Spectrometry
X-ray crystallography and Calorimetry
SDS-PAGE
Q.11
In short, what is the hypothesis of the paper?
Hydrogen bonds are strongest in peptide-peptide interactions.
Breaking a hydrogen bond requires 5-6 kcal/mol of energy.
A molecule is satisfied if hydrogen bonding occurs within the structure or within solvent.
This is a waste of time.
None of the above
Q.12
Which is thermodynamically favored, peptide-peptide bonds or peptide-water bonds?
Peptide-Peptide bonds
Intrapeptdie bonds
Peptide-Water bonds
Interpeptide bonds
Both A & B
Q.13
An Intrapeptide bond is a bond between which of the following?
Peptide-Hydrogen bond
Peptide-Water bond
Peptide-Peptide bond
Peptide-Amino acid sequence
None of the above
Q.14
Name one author of the paper discussed.
Dr. Wilent
Dr. Patrick Fleming
Dr.Seuss
Chase Utley
Q.15
When was the reseacrh paper written?
1776
1955
2004
2005
Q.16
Simulations were ran at which temperature?
300 K
273 K
Room Temperature
1,000 K
Q.17
Simulations were ran at which of the following time frame?
0.1 psec for 100 sec
Once every 24 hrs
No frames existed
30 sec
Q.18
The Protein Database (PDB) survey shows that.......polar groups have Hydrogen Bonds.
10%
90%
50%
12%
Q.19
Ice has ___________ density as compared to water.
higher
lower
the same
Q.20
What is the maximum number of hydrogen bonds one molecule of water can form?
1
2
3
4
0 h : 0 m : 1 s
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