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 compound of hydrogen and carbon only.

Subject:

a clear, colourless solution of hydrogen chloride (HCl) in water. It is a strong and highly...

during hydrocracking a high hydrogen concentration (partial pressure) ensures that any shorter...

bonds that form between the hydrogen atom of one molecule and an oxygen, nitrogen or fluorine...

combining with hydrogen

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