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.

when radioactive particles collide with air molecules, they can cause the molecules to lose or...

the energy required to remove electrons from an element in the gaseous phase.

forms ions (either by breaking a crystal lattice up or by a chemical reaction).

compounds that have different structural formulae but the same molecular formula.

occurs when an ion in a crystal structure is replaced by a different type of ion without...

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