Crude Oil: Unrefined liquid petroleum pumped underground by oil wells.
-Varies form colorless to greenish-brown to black, and can be as fluid as water or resistant to flow like tar.
-One cannot use crude commercially in its natural state, as it must be separated into simpler mixtures.
Hydrocarbons: Molecular compounds that contain only atoms of the elements hydrogen and carbon.
Petroleum
-Provides about half of the U.S.'s annual energy needs
-Most is used as fuel.
-Also used in cars, jackets, to provide heat in homes, and more!
-89% of petroleum is burned as fuel.
-7% used fir producing new substances!
-4% used as miscellaneous products.
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