Intermolecular Forces and Properties

Is the pressure exerted by its vapor when in equilibrium with its liquid or solid

• Surface Tension

• Viscosity

• Vapor Pressure

• Boiling Point

Is the temperature at which its vapor pressure is equal to the external or atmospheric pressure

• Surface Tension

• Viscosity

• Vapor Pressure

• Boiling Point

Is the amount of heat required to vaporize one mole of a substance at its boiling point.

• Heat of Vaporization

• Amorphous Solids

• Crystalline Solids

• Heat of Fusion

The substance changes from a gas to a liquid

• Freezing

• Melting

• Condensation

• Vaporization

Tags

NGSS.MS-PS1-4

Which of the following best describes Van der Waals forces?

• A type of chemical bond between atoms within a molecule

• Forces of attraction between molecules that are close together

• A strong force of attraction between ions and molecules

• The only type of intermolecular force present in ionic compounds

What is a key characteristic of hydrogen bonding?

• It occurs only between molecules containing hydrogen and carbon atoms

• It is a special type of dipole-dipole interaction involving a hydrogen atom bonded to a highly electronegative atom

• It is weaker than Van der Waals forces

• It requires the presence of a metal atom

Which of the following is NOT a type of Van der Waals force?

• Van der Waals forces

• Hydrogen bonds

• Dipole-induced dipole forces

• Permanent dipole-dipole forces

Which statement about dipole-dipole interactions is true?

• They are the strongest type of intermolecular force

• They occur between molecules where both have a permanent dipole

• They can only occur in solid state substances

• They are weaker than Van der Waals forces

Van der Waals forces are a result of:

• The movement of electrons creating temporary dipoles

• The sharing of electrons between two atoms

• The permanent separation of charge within a molecule

• The interaction between a hydrogen atom and an electronegative atom

Which of the following best explains why ion-dipole forces are important in the dissolution process of ionic compounds in water?

• They increase the boiling point of the solution

• They help in the formation of hydrogen bonds between water molecules

• They contribute to the stabilization of the ions in the solution by surrounding them with water molecules

• They decrease the freezing point of the solution

Tags

NGSS.HS-PS3-5