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.

the sum of the number of protons and neutrons (the nucleons) in the nucleus of an atom. It...

calculating the mass of a substance, given the mass of a reactant or product.

calculating the volume of a product when the mass of a reactant or product is given.

any substance that occupies space and has mass.

the phase change from a solid to a liquid.

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