BIO 161
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1. Which answer cor- O>N>C>H
rectly ranks the this will help predict polarity when molecules have O or N linked to C or H.
atoms in terms of de-
creasing electroneg-
ativity (the high-
est electronegativity
first)?
2. Which atom in The C that's in C=O.
the pictured mole- This C atom is bound to the two most electronegative atoms in the molecule
cule will have the (O), both of which are pulling electrons from C.
strongest partial pos-
itive charge?
3. Dr. Haxton says the Both bonds are nonpolar.
O-O bond is polar When two atoms of the same kind form a covalent bond, they share electrons
and the C-C bond is equally because their electronegativity is the same.
nonpolar. A good stu-
dent would say ...
4. Use your knowledge O and H are at opposite ends of the electronegativity scale, so the polarity is
of electronegativity very large.
to pick out the most
polar bond in the list
below.
5. If you want a mole- N and H differ in electronegativity more than any other bonded pair of atoms
cule that is highly po- in the list, making the N-H bond most polar.
lar, look for one that
contains:
6. Each water molecule four ... hydrogen
is joined to _____ oth- a water molecule is joined to four other water molecules by hydrogen bonds.
1/7
, BIO 161
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er water molecules
by ____ bonds.
7. The unequal shar- polar
ing of electrons with- The electrons spend more time with the oxygen of the water molecule than
in a water mole- with the hydrogens of water. Thus, the oxygen has a net negative charge and
cule makes the water the hydrogens have a net positive charge.
molecule _____.
8. electronegativity The tendency of an atom to pull electrons toward itself
9. In this molecule, polar covalent
what type of bond
is found between the
oxygen and hydro-
gens?
10. weak bonds Hydrogen Bonds are weaker than covalent bonds because they do not involve
sharing of electrons, and they are weaker than ionic bonds because they
involve the attraction of partial (not full) opposite charges.
11. Which polymers are proteins
composed of amino
acids?
12. Which of the follow- oxygen
ing is not attached The central carbon atom in an amino acid is bonded to an amino functional
to the central carbon group, a carboxyl functional group, a side chain, and hydrogen.
atom in an amino
acid?
13.
2/7
Study online at https://quizlet.com/_vl493
1. Which answer cor- O>N>C>H
rectly ranks the this will help predict polarity when molecules have O or N linked to C or H.
atoms in terms of de-
creasing electroneg-
ativity (the high-
est electronegativity
first)?
2. Which atom in The C that's in C=O.
the pictured mole- This C atom is bound to the two most electronegative atoms in the molecule
cule will have the (O), both of which are pulling electrons from C.
strongest partial pos-
itive charge?
3. Dr. Haxton says the Both bonds are nonpolar.
O-O bond is polar When two atoms of the same kind form a covalent bond, they share electrons
and the C-C bond is equally because their electronegativity is the same.
nonpolar. A good stu-
dent would say ...
4. Use your knowledge O and H are at opposite ends of the electronegativity scale, so the polarity is
of electronegativity very large.
to pick out the most
polar bond in the list
below.
5. If you want a mole- N and H differ in electronegativity more than any other bonded pair of atoms
cule that is highly po- in the list, making the N-H bond most polar.
lar, look for one that
contains:
6. Each water molecule four ... hydrogen
is joined to _____ oth- a water molecule is joined to four other water molecules by hydrogen bonds.
1/7
, BIO 161
Study online at https://quizlet.com/_vl493
er water molecules
by ____ bonds.
7. The unequal shar- polar
ing of electrons with- The electrons spend more time with the oxygen of the water molecule than
in a water mole- with the hydrogens of water. Thus, the oxygen has a net negative charge and
cule makes the water the hydrogens have a net positive charge.
molecule _____.
8. electronegativity The tendency of an atom to pull electrons toward itself
9. In this molecule, polar covalent
what type of bond
is found between the
oxygen and hydro-
gens?
10. weak bonds Hydrogen Bonds are weaker than covalent bonds because they do not involve
sharing of electrons, and they are weaker than ionic bonds because they
involve the attraction of partial (not full) opposite charges.
11. Which polymers are proteins
composed of amino
acids?
12. Which of the follow- oxygen
ing is not attached The central carbon atom in an amino acid is bonded to an amino functional
to the central carbon group, a carboxyl functional group, a side chain, and hydrogen.
atom in an amino
acid?
13.
2/7
