Intermolecular Forces Post-Lecture Flashcard

Front

What are intermolecular forces (IMFs)?

Back

Forces that exist between molecules, influencing their physical properties.

Front

What type of molecules have permanent dipoles?

Back

Polar molecules.

Front

Which intermolecular force is present between two nonpolar molecules?

Back

London dispersion forces (LDF).

Front

What do intermolecular forces control?

Back

The properties of liquids and solids.

Front

What is a hydrogen bond?

Back

A strong type of dipole-dipole interaction that occurs when a hydrogen atom is covalently bonded to a highly electronegative atom (O, N, or F) and is attracted to another electronegative atom.

Front

What is the requirement for hydrogen bonding?

Back

One polar molecule must have a hydrogen atom covalently bonded to an oxygen, nitrogen, or fluorine atom, and the other must have an oxygen, nitrogen, or fluorine atom.

Front

What are intramolecular bonds?

Back

Forces that exist within molecules, holding the atoms together.

Front

What are London dispersion forces?

Back

Weak intermolecular forces that arise from temporary dipoles in nonpolar molecules.

Front

What is the difference between polar and nonpolar molecules?

Back

Polar molecules have a net dipole moment due to uneven distribution of electrons, while nonpolar molecules do not.

Front

What is a dipole-dipole interaction?

Back

An attractive force between the positive end of one polar molecule and the negative end of another.