WorksheetsIntermolecular Forces AP Chemistry
Total questions: 15
Worksheet time: 15mins
Which of the following statements correctly explains why hydrogen bonding is such a strong intermolecular force?
There is an attraction between a small, weakly electronegative hydrogen atom and a large, strongly electronegative atom of fluorine, nitrogen, or oxygen
There is an attraction between a small, highly electronegative hydrogen atom and a large, highly electronegative fluorine atom
There is an attraction between the hydrogen and oxygen atoms, only
There is an attraction between the hydrogen and nitrogen atoms, only
Water has an unusually high boiling point for a molecular compound because it has
hydrogen bonding
ion-ion attractions
a high density
a large gram formula mass
Which type of IMF is responsible for the attraction pictured above?
Dipole-Dipole Interaction
Ion-Dipole Interaction
Hydrogen Bonds
Covalent Bond
Ionic Bond
Rank these in order of strength:
covalent bond
London forces
hydrogen bond
dipole-dipole attraction
dipole-dipole>covalent bond>hydrogen bond>London
London>dipole-diple>hydrogen bond>covalent bond
covalent bond>hydrogen bond>dipole-dipole>London
hydrogen bond>dipole-dipole>London>covalent bond
Which of the following will NOT have hydrogen bonding?
Does HF have hydrogen bonding?
yes
no
Which substance would have the weakest intermolecular forces of attraction?
CH4
NaCl
H2O
MgF2
When the temperature of matter increases the particles...
speed up and move closer
speed up and move farther apart
slow down and move closer together
slow down and move farther apart
Why does a gas with a lower vapor pressure have a higher boiling point?
the molecules need more energy to break free of their attractions to other molecules and change phase from liquid to gas
the forces of attraction between the molecules are strong
the substance has low volatility
all of the answers are correct
Which sample has hydrogen bonding?
H2S
CH4
NH3
HI
If we heat water then:
some of the bonds between the hydrogen and oxygen break
all of the bonds between the hydrogen and oxygen break
some of the bonds between water molecules will break
Which of the following intermolecular forces is the weakest?
A) Hydrogen bonding
B) Dipole-dipole interactions
C) London dispersion forces
D) Ion-dipole interactions
What is the primary intermolecular force present in a sample of liquid ammonia (NH3)?
A) London dispersion forces
B) Dipole-dipole interactions
C) Hydrogen bonding
D) Ion-dipole interactions
Which of the following statements best explains why water has a high surface tension?
A) Water molecules are held together by strong covalent bonds.
B) Water molecules are held together by hydrogen bonds.
C) Water molecules are held together by ionic bonds.
D) Water molecules are held together by London dispersion forces.
In an experiment, a student observes that a liquid has a high boiling point. Which of the following is most likely true about the intermolecular forces in this liquid?
A) The liquid has weak intermolecular forces.
B) The liquid has strong intermolecular forces.
C) The liquid has no intermolecular forces.
D) The liquid has only London dispersion forces.
