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AP Chem Intermolecular Forces

Total questions: 26

Worksheet time: 19mins

Name
Class
Date
1.
Which of the following liquids experiences dipole-dipole intermolecular forces?
a)
H2 (l)
b)
CF4 (l)
c)
SO2 (l)
d)
CCl4 (l)
2.
A sample of a solid substance does not conduct electricity in either the solid or liquid phase.  The solid is soluble in water.  Which of the following types of interactions is most likely found between particles in the pure substance?
a)
ionic bonds
b)
metallic bonds       
c)
network covalent bonds
d)
dipole-dipole forces
3.
Based on Coulomb’s Law and the data in the table above, which of the following would have the weakest interactions with an adjacent water molecule in an aqueous solution? 
a)
Hg2+
b)
Ba2+
c)
Mg2+
d)
Al3+
4.
Which of the following molecules is least soluble in water?
a)
CH2F2
b)
CH3OH
c)
CH2O
d)
CH3CH3
5.
At room temperature, chlorine, Cl2, is a gas.  Which of the following provides a characteristic of chlorine with a correct explanation?
a)
chlorine has a lower boiling point than bromine (which is a liquid at room temperature) because chlorine has fewer electrons than bromine
b)
chlorine has a lower first ionization energy than argon (an atomic element that is also a gas at room temperature) because elemental chlorine forms molecules whereas elemental argon does not.
c)
chlorine is a not a good conductor of electricity because it has lone pairs of electrons.
d)
chlorine is soluble in water because chlorine is polar.
6.
Based on the information in the table, which liquid has a higher vapor pressure at 25oC and why?
a)
CBr4 (l), because it has weaker intermolecular forces
b)
CBr4 (l), because it has stronger intermolecular forces
c)
CHBr3 (l), because it has weaker intermolecular forces
d)
CHBr3 (l), because it has stronger intermolecular forces
7.

Hydrogen bonding occurs when hydrogen of one molecule is bonded to Nitrogen, Oxygen, or Fluorine of ANOTHER molecule. Which of the following compounds has hydrogen bonding?

a)

F2

b)

NO3

c)

H2S

d)

NH3

8.

A dipole/polar molecule is...

a)

a probability map of where an electron may be found at any one time.

b)

something that occurs when two atoms of similar electronegativities bond.

c)

the creation of opposite charges at either end of the molecule.

9.

London forces occur in all molecules, but are stronger in atoms/molecules with more electrons. Which of these has the strongest London forces?

a)

F2

b)

Br2

c)

I2

d)

Cl2

10.

________ intermolecular forces (IMFs) cause liquids to have ________ boiling points.

a)

weak; high

b)

strong; low

c)

strong; high

d)

external; cold

11.
Which noble gas has the highest boiling point?
a)
Xe
b)
Kr
c)
Ar
d)
He
12.

What forces will the following molecule have?

a)

London dispersion force (LDF) only

b)

dipole-dipole

c)

hydrogen bonding

13.

Which substance would have the weakest intermolecular forces of attraction?

a)

CH4

b)

NaCl

c)

H2O

d)

MgF2

14.

Which of these has dispersion forces?

a)

I2

b)

NH3

c)

OCl2

d)

SH2

15.

Intermolecular forces for: NH3

a)

Dispersion Force

b)

Dipole dipole

c)

Hydrogen bonding

16.

Intermolecular forces for: CO2

a)

Dispersion Force

b)

Dipole dipole

c)

Hydrogen bonding

17.
How will the following molecule bond with itself?
a)
Dispersion
b)
Dipole
c)
Hydrogen bond
18.
Type of intermolecular force present in HF.
a)
dipole dipole
b)
dispersion
c)
H-bond
d)
ionic
19.
Which of the following will take the longest to evaporate?
a)
CH3CH2OH
b)
CH3OH
c)
CH3CH3
20.

Which substance has the weakest intermolecular forces?

a)

Substance A, boiling point of 75 °C

b)

Substance B, boiling point of 105 °C

c)

Substance C, boiling point of 25 °C

d)

Substance d, boiling point of 45 °C

21.
Which of the following would have molecule(dipole)-ion attractions?
a)
Cl2(aq)
b)
H2O(s)
c)
NaCl(aq)
d)
CaBr2(s)
22.
Determine the type of intermolecular force present in sand, SiO2.
a)
dipole dipole
b)
dispersion
c)
ionic
d)
covalent network
23.
Which of the following geometries could be nonpolar?
a)
bent
b)
tetrahedral
c)
trigonal pyrimidal
d)
none of the above
24.
Which formula represents a nonpolar molecule?
a)
HBr
b)
H2S
c)
CBr4
d)
PCl3
25.

Which of the following liquids experiences dipole-dipole intermolecular forces?

a)

O2(l)

b)

CCl4(l)

c)

SO3(l)

d)

CF2Cl2

26.

When Ice melts why does the temperature stay at zero for a while before increasing ?

a)

The particles must all reach the same temperature before the temperature can change.

b)

The hot plate wasn't turned on.

c)

The thermometer was not connected correctly.

d)

The kinetic energy was too high and the particles had to slow down.

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