Learn Chemistry: Glossary

Description

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

Type of Activity

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group work, working independently

Audience

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TeacherStudent

Age Group

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16 to Undergraduate
learn-chemistry-glossary
Term Definition
Calibration (thermometers) To ensure accurate temperature readings (for example when measuring melting points) thermometers are often calibrated by measurement of melting points of pure compounds. A graph of measured melting points against actual ones can then be used to correct the thermometer.
Capillary (tubes) Thin walled tubes of a small diameter. These can be sealed at one end for use in melting point determinations or they can be 'drawn out' to make micropipettes for spotting TLC plates.
Chromophore A group which will absorb radiation in the visible or UV spectrum. Compounds containing chromophores can be visualised on developed TLC plates under UV light providing the plate has been pre-treated with a suitable fluorescing agent.
Clear solution A liquid that is free of any solids or suspended material. A clear solution may be coloured.
Colourless Any material that has no colour (as opposed to white).