Do all organic molecules contain carbon, hydrogen, and oxygen?
Risposta:
No, but they all contain carbon and hydrogen.
Spiegazione:
Almost all organic molecules contain carbon and hydrogen, and many contain other elements as well.
For example, ethane is #"CH"_3"CH"_3#. It contains only carbon and hydrogen.
Ethanol is #"CH"_3"CH"_2"OH"#. It contains oxygen as well.
Glycine is #"H"_2"NCH"_2"COOH"#. This one adds nitrogen.
There are many more examples, but all contain carbon and hydrogen.