Glossary

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Looking for a quick definition?

We’ve got loads of key subject terms in our subject glossaries. There are three ways of finding what you are looking for:

  • First click on the letters of the alphabet to browse for terms.
  • Select a subject from the drop-down menu above to filter the terms by Subject.
  • Or lastly, type the term you are looking for into the search box.

EXAMPLES

Here are some examples of the kinds of definitions you’ll find on this page.

a molecule that is so big that we can see it, e.g. diamond.

Subject:

a substance that consists of two or more chemically joined atoms.

a group of atoms held together by chemical bonds.

molecule which generally contains carbon atoms. There are some exceptions including CO2 , H­...

a molecule that has a partial negative charge at one end and a partial positive charge at the...

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