What are intermolecular forces and how do they compare in strength between polymer molecules and small molecular substances?

Intermolecular forces are the forces of attraction between molecules. In polymers, these forces are relatively strong compared to the weaker intermolecular forces found in many small molecular substances, which is why polymers tend to have higher melting and boiling points.

This answer demonstrates understanding of intermolecular forces and their relative strengths, which is crucial for explaining the properties of different substances. The question tests the student's ability to compare and contrast the forces in polymers and small molecules.