Learn Chemistry: Glossary


A glossary for Learn Chemistry explaining the meaning of chemistry terms used within this site.

Type of Activity

group work, working independently



Age Group

16 to Undergraduate
Term Definition

1. The removal of impurities from a solution by extracting with an immiscible solvent.
2. The washing away of soluble impurities from a solid filtered in a Buchner funnel using cold solvent.
3. The complete transfer of a solid or solution by repeated washing out with solvent (for example in the preparation of a standard solution).

Washings The material produced from a washing procedure.
Work up The final stages of a reaction where the product is isolated and purified.