#1
What is the primary force responsible for holding atoms together in a molecule?
Electrostatic force
Gravitational force
Magnetic force
Nuclear force
#2
What is the term for the ability of a substance to dissolve in another substance?
Sublimation
Evaporation
Diffusion
Solubility
#3
What is the term for the measure of the resistance of a liquid to flow?
Viscosity
Density
Surface tension
Capillary action
#4
Which type of bonding involves the sharing of electrons between atoms to form molecules?
Ionic bonding
Covalent bonding
Metallic bonding
Hydrogen bonding
#5
What is the name of the process by which a solid directly changes to a gas without passing through the liquid phase?
Evaporation
Condensation
Sublimation
Fusion
#6
Which of the following is an example of a nonpolar molecule?
#7
Which of the following statements about hydrogen bonding is correct?
Hydrogen bonding involves the sharing of electrons between atoms.
Hydrogen bonding occurs between a hydrogen atom and a highly electronegative atom.
Hydrogen bonding is stronger than covalent bonding.
Hydrogen bonding is not affected by the polarity of molecules.
#8
Which intermolecular force is responsible for the high boiling point of water?
London dispersion force
Dipole-dipole interaction
Hydrogen bonding
Ion-dipole interaction
#9
Which of the following molecules exhibits the strongest London dispersion forces?
Oxygen (O2)
Methane (CH4)
Ethanol (C2H5OH)
Hexane (C6H14)
#10
Which of the following is a property of ionic compounds?
They have low melting and boiling points.
They conduct electricity in the solid state.
They consist of discrete molecules.
They are typically insoluble in water.
#11
Which of the following statements about dipole-dipole interactions is true?
They occur between a hydrogen atom and an electronegative atom.
They are only present in nonpolar molecules.
They involve the attraction between permanent dipoles.
They are stronger than hydrogen bonding.
#12
What is the term for the point at which the vapor pressure of a liquid equals the external pressure?
Triple point
Boiling point
Critical point
Freezing point
#13
Which of the following statements accurately describes the Van der Waals forces?
Van der Waals forces are only present in polar molecules.
Van der Waals forces are stronger than hydrogen bonding.
Van der Waals forces include London dispersion forces and dipole-dipole interactions.
Van der Waals forces are not influenced by molecular size.
#14
Which of the following substances has the highest boiling point?
Carbon dioxide (CO2)
Methanol (CH3OH)
Nitrogen (N2)
Water (H2O)
#15
What is the term for the energy required to break one mole of bonds in a gaseous substance?
Ionization energy
Heat of vaporization
Bond dissociation energy
Enthalpy of fusion
#16
Which of the following molecules experiences the strongest hydrogen bonding?
Ethanol (C2H5OH)
Methane (CH4)
Ammonia (NH3)
Acetone (CH3COCH3)
#17
Which of the following substances has the highest surface tension?
Water (H2O)
Acetone (CH3COCH3)
Methanol (CH3OH)
Ethanol (C2H5OH)