The chemical formula of ... Sometimes the name of the compound gives information about the formula of that compound. Names of these compounds have prefixes that give the number of atoms of certain ...

But sometimes the symbol comes from a name for the element that is not ... chemically joined together. Compounds form in chemical reactions, and you need other chemical reactions to separate ...

Most organic compounds contain carbon and hydrogen ... medications and medical devices (agents that act on diseases without chemical interaction with the body). Pharmaceuticals (brand name and generic ...