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
B glassware sizes Sizes of ground glass joints which are usually printed on the joints of 'Quickfit' glassware, e.g. B19/26.
Boiling stick A thin stick of wood added to solutions to prevent 'bumping' (see also Anti-bumping granule or Bumping).
Buchner flask A thickened glass conical flask with a side arm for connection to a water pump. Used for reduced pressure filtration in conjunction with a Buchner funnel.
Buchner funnel A ceramic funnel used in conjunction with flat filter papers for collecting solids under reduced pressure.
Bumping A term used to describe the sudden uncontrollable boiling of a solution which shoots hot liquid out of a container. This is prevented by using anti-bumping granules, a magnetic stirrer or a boiling stick.