AP Chem Intermolecular Forces

Which of the following liquids experiences dipole-dipole intermolecular forces?

• H₂ (l)
• CF₄ (l)
• SO₂ (l)
• CCl₄ (l)

A sample of a solid substance does not conduct electricity in either the solid or liquid phase.  The solid is soluble in water.  Which of the following types of interactions is most likely found between particles in the pure substance?

• ionic bonds
• metallic bonds       
• network covalent bonds
• dipole-dipole forces

Tags

NGSS.HS-PS1-3

Based on Coulomb’s Law and the data in the table above, which of the following would have the weakest interactions with an adjacent water molecule in an aqueous solution? 

• Hg²⁺
• Ba²⁺
• Mg²⁺
• Al³⁺

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

Which of the following molecules is least soluble in water?

• CH₂F₂
• CH₃OH
• CH₂O
• CH₃CH₃

At room temperature, chlorine, Cl₂, is a gas.  Which of the following provides a characteristic of chlorine with a correct explanation?

• chlorine has a lower boiling point than bromine (which is a liquid at room temperature) because chlorine has fewer electrons than bromine
• chlorine has a lower first ionization energy than argon (an atomic element that is also a gas at room temperature) because elemental chlorine forms molecules whereas elemental argon does not.
• chlorine is a not a good conductor of electricity because it has lone pairs of electrons.
• chlorine is soluble in water because chlorine is polar.

Tags

NGSS.HS-PS1-1

Based on the information in the table, which liquid has a higher vapor pressure at 25^oC and why?

• CBr₄ (l), because it has weaker intermolecular forces
• CBr₄ (l), because it has stronger intermolecular forces
• CHBr₃ (l), because it has weaker intermolecular forces
• CHBr₃ (l), because it has stronger intermolecular forces

Tags

NGSS.HS-PS1-3

Hydrogen bonding occurs when hydrogen of one molecule is bonded to Nitrogen, Oxygen, or Fluorine of ANOTHER molecule. Which of the following compounds has hydrogen bonding?

• F₂

• NO₃

• H₂S

• NH₃

A dipole/polar molecule is...

• a probability map of where an electron may be found at any one time.

• something that occurs when two atoms of similar electronegativities bond.

• the creation of opposite charges at either end of the molecule.

Tags

NGSS.HS-PS3-5

London forces occur in all molecules, but are stronger in atoms/molecules with more electrons. Which of these has the strongest London forces?

• F₂

• Br₂

• I₂

• Cl₂

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-3

________ intermolecular forces (IMFs) cause liquids to have ________ boiling points.

• weak; ^high

• strong; _low

• strong; ^high

• external; cold

Tags

NGSS.HS-PS1-3