Question

Select the keyword or phrase that will best complete each sentence. Intermolecular forces are the interactions that exist ________.

1) between molecules in a substance
2) within a single molecule
3) between atoms in a substance
4) within the nucleus of an atom

Answer 1

Intermolecular forces exist between molecules in a substance and include dispersion forces, dipole-dipole interactions, and hydrogen bonding, playing a critical role in determining the physical properties of substances.

Step-by-step explanation:

Intermolecular forces are the interactions that exist between molecules in a substance. These forces are electrostatic in nature, arising from the interaction between positively and negatively charged species. The major types of intermolecular forces are dispersion forces, dipole-dipole interactions, and hydrogen bonding. While the intermolecular forces are usually much weaker than intramolecular forces, which are the covalent bonds within a molecule, they play a critical role in determining the physical properties of a substance and in driving the phase changes from gas to liquid or solid under appropriate conditions.