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Glossary
W  
wavelength
The distance between the crests of waves; used in the context of electromagnetic radiation.
weak acid
An acid that incompletely dissociates.
weak base
An base that incompletely dissociates or incompletely reacts with water.
weight
A measure of the pull of gravitational force on an object; directly proportional to mass.
work
The result of the movement of matter against a force.