EALS-Q3-ST2

Which of the following is the intermolecular force that is present in all types of neighboring molecules?

• ionic bond

• hydrogen bond

• dipole-dipole forces

• London dispersion forces

Which is properly ordered from the weakest to strongest intermolecular attractions?

• London dispersion forces, dipole-dipole, hydrogen bond

• dipole-dipole, hydrogen bond, London dispersion forces

• dipole-dipole, London dispersion forces, hydrogen bond

• London dispersion forces, hydrogen bond, dipole-dipole

Which type of intermolecular force of attraction is the strongest in the molecule HF

• ionic bond

• dispersion

• dipole-dipole

• hydrogen bond

Which one of the following properties decreases once the strength of its intermolecular forces increases?

• viscosity

• boiling point

• melting point

• evaporation rate

Which of the following trends is correct about substances with stronger intermolecular attractions?

• higher melting and higher boiling points

• lower melting points and higher boiling points

• lower melting and boiling points

• higher melting points and lower boiling points

Which of the following pertains to London dispersion force?

• It is the weakest intermolecular force.

• They operate only in polar molecules.

• They operate only in ionic compounds.

• It is an attractive force between hydrogen and fluorine.

Which statement about dipole-dipole forces is incorrect?

• They are present in polar molecules.

• They are present in nonpolar molecules.

• They are the weakest intermolecular force.

• They are the strongest intermolecular force.

Which of the following phase transitions shows a decrease in the intermolecular forces of attraction?

• liquid to solid

• liquid to gas

• gas to liquid

• gas to solid

What type of intermolecular force is present in all substances, regardless of polarity?

• ionic bond

• hydrogen bond

• dipole-dipole forces

• London dispersion forces

Which of the following can exhibit hydrogen bonding among themselves?

• H₂Te

• H₂Se

• H₂O

• H₂S