Intermolecular Forces Review

What is the significance of boiling point in determining intermolecular forces?

• The boiling point has no relation to intermolecular forces.

• Higher boiling points suggest weaker intermolecular forces.

• The boiling point indicates the molecular weight of a substance.

• Higher boiling points suggest stronger intermolecular forces.

What is the effect of intermolecular forces on the state of matter?

• Stronger intermolecular forces typically result in substances being gases at room temperature.

• Stronger intermolecular forces typically result in substances being solid or liquid at room temperature.

• Weaker intermolecular forces typically result in substances being solid at room temperature.

• Intermolecular forces have no effect on the state of matter.

What is the role of electronegativity in hydrogen bonding?

• Electronegativity has no effect on hydrogen bonding.

• Electronegativity determines how strongly an atom attracts electrons, creating a dipole when bonded to hydrogen.

• Electronegativity only affects ionic bonds, not hydrogen bonds.

• Electronegativity is irrelevant in determining molecular polarity.

How do dipole-dipole interactions occur?

• Dipole-dipole interactions occur between nonpolar molecules, where the positive end of one molecule is repelled by the negative end of another.

• Dipole-dipole interactions occur between polar molecules, where the positive end of one molecule is attracted to the negative end of another.

• Dipole-dipole interactions occur between ionic compounds, where the positive ions attract the negative ions.

• Dipole-dipole interactions occur between gases, where the molecules collide and interact randomly.

How do size and mass affect London dispersion forces?

• Larger and heavier molecules have fewer electrons, leading to weaker London dispersion forces.

• Size and mass have no effect on London dispersion forces.

• Larger and heavier molecules have more electrons, which can lead to stronger London dispersion forces due to increased polarizability.

• Smaller molecules always have stronger London dispersion forces than larger ones.

What type of intermolecular forces does NH3 exhibit?

• Only hydrogen bonding

• Hydrogen bonding, dipole-dipole interactions, and London dispersion forces

• Only dipole-dipole interactions

• Only London dispersion forces

Which molecule has the weakest intermolecular forces: HCl, NH3, or Br2?

• HCl

• NH3

• Br2

• CH4

What is the relationship between boiling point and intermolecular forces?

• Substances with stronger intermolecular forces have lower boiling points because less energy is required to overcome these forces.

• Substances with weaker intermolecular forces have higher boiling points because more energy is required to overcome these forces.

• Substances with stronger intermolecular forces have higher boiling points because more energy is required to overcome these forces during the phase change from liquid to gas.

• Boiling point is unrelated to intermolecular forces and depends solely on molecular weight.

What is hydrogen bonding?

• A weak interaction between two hydrogen atoms.

• A strong type of dipole-dipole interaction involving hydrogen and electronegative atoms.

• A type of ionic bond between hydrogen and oxygen.

• A covalent bond formed between two hydrogen atoms.

What is the strongest type of intermolecular force?

• Dipole-dipole interactions

• London dispersion forces

• Hydrogen bonding

• Ionic bonding