Primary standard
Leaving Cert Chemistry · Interactions of Matter
Higher Level
A substance pure and stable enough that a standard solution can be prepared directly by weighing it out and dissolving it in a known volume. It must not absorb moisture from the air, must dissolve readily, and ideally has a fairly high relative molecular mass so that weighing errors are small.
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All Chemistry terms
The whole Leaving Cert Chemistry glossary, grouped by strand and labelled by level.
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