0 a clear liquid made from petroleum, from which plastics and many chemical products can be made --
1 a colorless liquid made from petroleum (= thick oil from under the ground), from which plastics and many chemical products can be made --
The lower, middle, and upper layers were a sodium hyposulfite -glycerin solution, a water-glycerin solution, and benzene, respectively.
Closely related to the benzene ring were its condensed forms, naphthalene and anthracene.
For example, benzene measurements were made but high cross-sensitivity to carbon monoxide meant that the results were invalid.
Once benzene is produced, the synthesis of more complex compounds occurs via simple substitution or addition reactions.
In a real experiment obvious candidates for such molecules are benzene, other aromatic compounds, or even nanotubes.
Indications were also found of the anaerobic biodegradation of benzene within the aquifer.
Thousands of people will have seen such images without ever connecting this to the chemical structure of benzene.
The combined benzene solutions were washed five times with 2 ml of water.
