van der waals
Low (Specialized Scientific Term)Technical/Scientific
Definition
Meaning
Relating to weak intermolecular forces between atoms or molecules, named after the Dutch physicist Johannes Diderik van der Waals.
Pertaining to the attractive or repulsive forces between molecules and surfaces that are not due to covalent bonds or ionic bonds, but rather to transient dipole interactions. Also used to describe equations of state that account for these forces.
Linguistics
Semantic Notes
Almost exclusively used in chemistry, physics, and materials science contexts. It is a proper noun turned into a technical adjective/compound.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage or spelling; it is a standardized international scientific term.
Connotations
Purely technical, with no regional cultural connotations.
Frequency
Equally low frequency in both dialects, confined to scientific literature and education.
Vocabulary
Collocations
Grammar
Valency Patterns
[van der Waals] + noun (e.g., forces, equation)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Virtually never used.
Academic
Core term in physical chemistry, physics, and materials science papers and textbooks.
Everyday
Extremely rare outside of scientific discussion.
Technical
The primary context of use; precise and fundamental in describing material properties and molecular behaviour.
Examples
By Part of Speech
adjective
British English
- The gecko's grip is a classic example of van der Waals adhesion at work.
- We need to account for the van der Waals contribution to the total energy.
American English
- The material's properties are dominated by van der Waals interactions.
- This is a van der Waals heterostructure engineered for specific electronic effects.
Examples
By CEFR Level
- Some insects can walk on water due to surface tension and van der Waals forces.
- The scientist explained how van der Waals forces allow geckos to climb smooth surfaces.
- Noble gases liquefy at low temperatures because of weak van der Waals attractions.
- The discrepancy between the ideal gas law and real gas behaviour is corrected by the van der Waals equation, which incorporates molecular size and attraction.
- Advances in microscopy allow us to measure the van der Waals force between two individual atoms.
Learning
Memory Aids
Mnemonic
Think of 'Walls' that are very 'Van' (weak/vulnerable) – these are the weak forces that act like a faint, invisible wall between molecules.
Conceptual Metaphor
A TEMPORARY HANDSHAKE or a faint, flickering magnet representing the temporary, weak attraction between neutral molecules.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate 'van der' (meaning 'of the' in Dutch). The entire term "ван-дер-Ваальса" is used as a direct transliteration.
- Avoid confusing with "валентные" (valence) forces, as van der Waals forces are non-valent.
Common Mistakes
- Incorrect capitalisation (e.g., 'Van Der Waals', 'van der waals').
- Omitting the space in 'van der Waals'.
- Using it as a standalone noun without 'forces' or 'equation' in beginner contexts.
Practice
Quiz
What is the primary context for the term 'van der Waals'?
FAQ
Frequently Asked Questions
Yes, as it derives from a proper name (Johannes Diderik van der Waals). 'van' is typically lowercase, 'der' is lowercase, and 'Waals' is capitalised.
London forces (dispersion forces) are one specific type of van der Waals force. The broader term 'van der Waals forces' also includes dipole-dipole and dipole-induced dipole interactions.
It would be highly unusual unless you are specifically discussing chemistry, physics, or biology (e.g., gecko adhesion) with a technically literate audience.
Like an English 'V' sound. In the original Dutch, 'W' is pronounced closer to English 'V'. The common English approximation is /ˈvɑːlz/ (vahlz).