Examlex
What is the first rule of naming branched isomers?
Earth's Crust
The outermost solid shell of the planet, known for being the layer on which we live and where most geological events occur.
Synthetic Substances
Artificial materials created through chemical processes, not found naturally.
Coal
A natural, black or brownish-black sedimentary rock used primarily as a fuel source in electricity generation and steel production.
Petroleum
A liquid mixture of hydrocarbons that is present in certain rock strata and can be extracted and refined to produce fuels including gasoline, kerosene, and diesel oil.
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