U2: Intermolecular Forces: Mastery Test

Which factor causes water to form small drops on a waxy surface?

• van der Waals forces

• hydrogen bonding

• London dispersion forces

• ionic bonding

Which list correctly orders intermolecular forces from weakest to strongest?

• London dispersion forces, dipole interaction forces, hydrogen bonding

• hydrogen bonding, dipole interaction forces, London dispersion forces

• dipole interaction forces, London dispersion forces, hydrogen bonding

• London dispersion forces, hydrogen bonding, dipole interaction forces

Tags

NGSS.HS-PS1-3

Select the correct answer. Which element experiences greater London dispersion forces?

• fluorine

• chlorine

• bromine

• iodine

Match the following types of forces with the corresponding molecules.

• F₂

• London dispersion force

• H₂O

• dipole–dipole interaction

• NaCl

• hydrogen bond

• HCl

• ionic bonding

Select the correct answer. Which factor is generally responsible for high melting points?

• high intermolecular forces of attraction

• low intermolecular forces of attraction

• van der Waals forces

• London dispersion forces

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A)?

• hydrogen bonding

• ionic bonding

• dipole interactions

• London dispersion forces

(a)   is most responsible for the fact that water is a liquid rather than a gas at room temperature.

• van der Waals forces
• hydrogen bonding
• London dispersion forces
• ionic bonding

Which statement about London dispersion forces is true?

• As the number of electrons in a molecule increases, the London dispersion force increases.

• As the number of electrons in a molecule decreases, the London dispersion force decreases.

• As the number of electrons in a molecule decreases, the London dispersion force increases.

• As the number of electrons in a molecule increases, the London dispersion force decreases.

Tags

NGSS.HS-PS1-3

Why are hydrogen bonds the strongest of the intermolecular forces?

• hydrogen forms covalent bonds

• hydrogen forms polar bonds

• hydrogen lacks the protection of inner electron shells

• hydrogen is protected by four outer electron shells

Which statement about the melting and boiling points of water and fluorine molecules is true?

• The melting and boiling points of both molecules are the same.

• The melting point of fluorine is higher than that of water.

• The boiling point of water is higher than that of fluorine.

• The melting and boiling points depend on the repulsive forces between the molecules of the compounds.

Tags

NGSS.HS-PS1-3