Van der Waals interactions

Definition

Van der Waals interactions are weak, short-range forces that arise from temporary fluctuations in electron distribution around molecules. These interactions play a crucial role in the structure and stability of many biological molecules.

5 Must Know Facts For Your Next Test

1. Van der Waals interactions include attractions and repulsions between atoms, molecules, and surfaces.
2. These forces are weaker than covalent and ionic bonds but are essential for molecular recognition processes.
3. They are significant in the folding of proteins and the formation of lipid bilayers.
4. Van der Waals interactions can influence the boiling and melting points of compounds.
5. These forces become stronger as the size of interacting particles increases.

Review Questions

• What are van der Waals interactions?
• How do van der Waals interactions differ from covalent bonds?
• Why are van der Waals interactions important in biological systems?

Related terms

Hydrogen Bond: A type of strong dipole-dipole interaction involving hydrogen bonded to highly electronegative atoms like oxygen or nitrogen.

Ionic Bond: A chemical bond formed through the electrostatic attraction between oppositely charged ions.

Covalent Bond: A type of strong chemical bond where two atoms share pairs of electrons.