Weak attractions between molecules, caused by temporary and uneven electron distributions rather than by hydrogen bonding, are called:

1. Beyond hydrogen bonds, biological molecules also experience another kind of weak, non-covalent attraction. 2. The text states: "Like hydrogen bonds, van der Waals interactions are weak attractions or interactions between molecules." 3. Ionic bonds involve full charge separation between ions, while peptide and glycosidic bonds are specific covalent linkages in proteins and carbohydrates -- none of these matches this weak, temporary attraction. 4. So this type of weak intermolecular attraction is called a van der Waals interaction. _Source: OpenStax Biology Ch 2 "The Chemical Foundation of Life", p.42 §2.1 | Atoms, Isotopes, Ions, and Molecules: The Building Blocks_