Intermolecular Force

Which of the following has the highest boiling point?

• H₂

• NH₃

• N₂

• O₂

Intermolecular forces are the forces

• within molecules

• between molecules

In general, substances with stronger intermolecular forces have ________ boiling points than those with weaker forces

• Higher

• Lower

• The same

Which substance has the weakest intermolecular forces?

• Substance A, boiling point of 75 °C

• Substance B, boiling point of 105 °C

• Substance C, boiling point of 25 °C

• Substance d, boiling point of 45 °C

Particles of a liquid

• are tightly packed together and stay in a fixed position.

• have no viscosity.

• decrease in volume with increasing temperature.

• are free to move around one another but still touch.

Tags

NGSS.MS-PS1-4

List the following from strongest to weakest.

• ion-dipole bonds

• Hydrogen bonds

• London Dispersion Forces / Van Der Waals Forces

• dipole-dipole interactions

Water is liquid at room temperature, but carbon dioxide is not. Why is that?

• CO₂ is straight, while H₂O is bent.

• H₂O has weaker intermolecular forces due to dipole-dipole interactions.

• H₂O has stronger intermolecular forces due to hydrogen bonding.

• CO₂ has less mass than H₂O.

Tags

NGSS.HS-PS1-1

Which of the following characteristics describe the following substance? Select all that apply.

• London dispersion forces (aka Van Der Waals forces)

• dipole-dipole interactions

• Hydrogen bonds

• polar

Tags

NGSS.HS-PS1-3

Which of the following characteristics describe the following substance? Select all that apply.

• London dispersion forces (aka Van Der Waals forces)

• dipole-dipole interactions

• Hydrogen bonds

• polar

Which of the following characteristics describe the following substance? Select all that apply.

• London dispersion forces (aka Van Der Waals forces)

• dipole-dipole interactions

• Hydrogen bonds

• polar

Tags

NGSS.HS-PS1-3