AnswersChemistry 1A - Mr. KaanLab: Ionic and Covalent Bonds

Intermolecular Forces Answers

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In the molecule on the left, areas that have a partial negative charge are pink and areas that have a partial positive charge are blue. The molecule on the right is nonpolar. What will most likely happen when these molecules get closer?

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A
The molecules will repel each other because of a dipole-dipole interaction.
B
The molecules will attract each other because of a dipole-dipole interaction.
C
An induced dipole will be produced in the molecule on the right.
D
An induced dipole will be produced in the molecule on the left.
2
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Substances X and Y are both nonpolar. If the volatility of X is higher than that of Y, what is the best explanation?

A
X’s molecules experience stronger dipole-dipole forces than Y’s molecules.
B
Y’s molecules experience stronger dipole-dipole forces than X’s molecules.
C
X’s molecules experience stronger London dispersion forces than Y’s molecules.
D
Y’s molecules experience stronger London dispersion forces than X’s molecules.
3

ICl has a higher boiling point than Br2. What is the best explanation for this?

A
Br2 experiences dipole-dipole interactions.
B
ICl experiences dipole-dipole interactions.
C
Br2 forms hydrogen bonds.
D
ICl experiences induced dipole-induced dipole interactions.
4

In comparison to molecules that interact by London dispersion forces only, the melting point of similar-sized molecules forming hydrogen bonds would most likely be

A
about the same.
B
unpredictable.
C
lower.
D
higher.
5

Are hydrogen bonds formed between all molecules?

A
No because hydrogen can only form these bonds with oxygen atoms.
B
No because hydrogen can only form these bonds with highly electronegative atoms.
C
Yes because hydrogen can easily form bonds with atoms that have a neutral charge.
D
Yes because hydrogen can form these bonds with weakly electronegative atoms.
6

In the figure below, two nonpolar molecules are interacting. Which interaction would most likely cause these molecules to repel each other?

Question illustration
A
hydrogen bonding
B
dipole-dipole interaction
C
dipole-induced dipole interaction
D
induced dipole-induced dipole interaction

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