IMF Test Review

A weak IMF will result in a

• high melting point

• high viscosity

• high surface tension

• low surface tension

Liquids with weak intermolecular forces

• contain a lot of kinetic energy
• easily evaporate
• cannot diffuse
• freeze easily

Which container has the greatest Intermolecular Force between Molecules?

• red

• yellow

• blue

Tags

NGSS.HS-PS3-4

Which compound has the strongest IMF

• HOH

• CH₄

• C₂H₆

• CH₃OH

Xenon has a greater atomic weight than neon. Xe has 131.3 amu while

Ne has 20.2 amu. The boiling points are 166.1K and 27.3K, respectively.

How do intermolecular forces account for the difference?

• Dipole-dipole interaction is greater in Xe than Ne so more energy is needed to break the bonds.

• H-bonding is greater for substances with higher atomic weight so greater energy is needed to change Xe to vapor.

• Atomic weight increases the chance of lesser dispersion forces so greater energy is needed to separate Xe atoms to change to vapor

• London dispersion forces are greater in substances with heavier atomic weight so greater energy is needed to separate

  the atoms of Xe than Ne.

Tags

NGSS.HS-PS1-3

Identify the IMF exist in CH₄

• dipole-dipole forces

• london forces

• ion-dipole forces

• hydrogen bonding

Tags

NGSS.HS-PS1-3

Identify the IMF exist in NH₃

• london dispersion forces

• ion-dipole forces

• dipole-dipole forces

• hydrogen bonding

Identify the IMF exist in HBr

• london dispersion forces

• hydrogen bonding

• dipole-dipole forces

• ion-dipole forces

To form a hydrogen bonding, Hydrogen needs to attract to the highly electronegative elements such us _____, _____, and ____

• chlorine, fluorine, and oxygen

• fluorine, oxygen, and sulfur

• fluorine, bromine, and oxygen

• fluorine, oxygen, and nitrogen

Dipole-Dipole forces are stronger than _______ and weaker than _________ interactions.

• london dispersion, ion-dipole

• hydrogen bonding, london dispersion

• ion-dipole, london dispersion