Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

V

Vanderwall forces

The relatively weak attractive forces that are operative between neutral atoms aand molecules that arise because of electrical polarization induced in each other of the particles by the presence particles.


Viscosity

the state of being thick, sticky, and semi-fluid in consistency, due to internal friction.


Visualising reagents

When the solvent has moved the substances to a suitable  height (15-18cm) the paper is dried and various spots  are visualised by suitable reagents called  visualising reagents


Volatile

substance easily evaporated at normal temperature