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
Nucleation The process by which crystal growth from a solution takes place. This can be aided by scratching the inside of the flask with a spatula or by adding a rough surface such as a single anti-bumping granule.
Nujol A paraffin oil used to disperse solid samples prior to Infra Red spectroscopy (see also Mull).