Download Hydrogen Bonding Quiz

Hydrogen Bonding Quiz
1. The O-H covalent bond in a water molecule is best described as being _____.
a) completely nonpolar
b) slightly nonpolar
c) slightly polar
d) very polar
2. In a water molecule, the oxygen atoms attains a slightly _____ charge, while the
hydrogen atoms attain a slightly _____ charge.
a) positive; negative
b) negative; positive
3. What is a hydrogen bond?
4. The correct ranking of bonds or forces in order from strongest to weakest is:
a) covalent bond, van der Waals force, hydrogen bond
b) van der Waals force, hydrogen bond, covalent bond
c) covalent bond, hydrogen bond, van der Waals force
d) hydrogen bond, covalent bond, van der Waals force
5. The strongest hydrogen bonds are formed between molecules in which hydrogen is
covalently bonded to an element with:
a) high electronegativity and large atomic radius
b) high electronegativity and small atomic radius
c) low electronegativity and large atomic radius
d) low electronegativity and small atomic radius
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6. In order to participate in a hydrogen bond, a hydrogen atom must be covalently bonded
to one of three elements. What are they?
a) nitrogen, oxygen, fluorine
b) oxygen, fluorine, sulfur
c) nitrogen, oxygen, chlorine
d) fluorine, chlorine, bromine
7. Which is a property of water that is a result of its hydrogen bonding?
a) Water has an unusually high boiling point.
b) Ice floats in liquid water.
c) Water has high surface tension.
d) All of the above
8. Which compound of each pair would have the higher boiling point?
a) HCl or HF
b) H2O or H2S
c) NH3 or PH3
9. In addition to hydrogen bonding, what also contributes to the fact that ice is less dense
than liquid water?
a) its poor conductivity
b) its bent shape
c) its low molecular mass
d) its low vapor pressure
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10. Which of the following can participate in hydrogen bonding in the liquid state?
a) HI
b) NaH
c) CH4
d) CH3OH
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