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 is the primary type of intermolecular force in nonpolar molecules?

Back

London dispersion forces are the primary type of intermolecular force in nonpolar molecules.

Front

What type of intermolecular force is present in water (H2O)?

Back

Water exhibits hydrogen bonding, which is a strong type of dipole-dipole interaction.

Front

What is hydrogen bonding?

Back

Hydrogen bonding occurs when hydrogen is covalently bonded to highly electronegative atoms like nitrogen (N), oxygen (O), or fluorine (F), resulting in a strong attraction between molecules.

Front

Which molecule has stronger intermolecular forces: propane (C3H8) or bromine (Br2)?

Back

Bromine (Br2) has stronger intermolecular forces than propane (C3H8) due to its larger size and polarizability.

Front

What is the effect of stronger intermolecular forces on boiling and melting points?

Back

Stronger intermolecular forces generally lead to higher boiling and melting points, as more energy is required to overcome these forces.

Front

What type of intermolecular force is present in hydrogen sulfide (H2S)?

Back

Hydrogen sulfide (H2S) primarily exhibits dipole-dipole forces due to its polar nature.

Front

What is the significance of molecular polarity in determining intermolecular forces?

Back

Molecular polarity affects the type and strength of intermolecular forces; polar molecules tend to have stronger dipole-dipole interactions compared to nonpolar molecules.

Front

Which of the following has hydrogen bonding: NH3, H2S, or CH4?

Back

NH3 (ammonia) has hydrogen bonding due to the presence of hydrogen bonded to nitrogen.

Front

What are dipole-dipole forces?

Back

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