Intermolecular Forces of Attraction Flashcard

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions). They play a crucial role in determining the physical properties of substances.

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces that arise from temporary dipoles in molecules. They are present in all molecules, but are the only type of intermolecular force in nonpolar molecules.

Front

What is a dipole-dipole interaction?

Back

Dipole-dipole interactions are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.

Front

What is hydrogen bonding?

Back

Hydrogen bonding is a strong type of dipole-dipole interaction that occurs when hydrogen is bonded to highly electronegative atoms like nitrogen, oxygen, or fluorine.

Front

Which molecule contains only London dispersion forces?

Back

CF4 (Carbon Tetrafluoride) contains only London dispersion forces as it is a nonpolar molecule.

Front

What type of intermolecular force is present in HCl?

Back

HCl exhibits dipole-dipole interactions due to its polar nature.

Front

What type of intermolecular force is present in H2S?

Back

H2S exhibits dipole-dipole interactions because it is a polar molecule.

Front

Which molecule has the lowest boiling point among CH4, C2H6, C3H8, and C4H10?

Back

CH4 (Methane) has the lowest boiling point due to its smaller size and weaker London dispersion forces.

Front

Which molecule exhibits hydrogen bonding?

Back

HF (Hydrogen Fluoride) exhibits hydrogen bonding due to the presence of hydrogen bonded to fluorine.

Front

What is the relationship between intermolecular forces and boiling point?

Back

Generally, stronger intermolecular forces result in higher boiling points, as more energy is required to separate the molecules.