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Petroleum Unit A

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Answer
Crude oil   unrefined liquid petroleum as it is pumped from the ground by oil wells.  
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Hydrocarbon   A molecule composed only of carbon and hydrogen atoms  
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Viscosity   A measure of "thick" liquids with resistance to flow. The thicker the fluid, the higher the measurement.  
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Alkane   A hydrocarbon containing only single covalent bonds.  
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Lewis dot structure   the representation of atoms, ions and molecules where valence-electrons dots surround each atom's symbol; it is useful for indicating covalent bonding.  
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Molecular formula   a chemical expression indicating the total atoms of each element contained in one molecule of a particular substance  
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Covalent bond   a linkage between two atoms involving the sharing of one pair (single bond), two pairs (double bond), or three pairs (triple bond) of valence electrons.  
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Isomer   A molecule that has the same formula as another molecule and differs from it only by the arrangement of atoms or bonds.  
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Petroleum   is a naturally occurring, flammable liquid found in rock formations in the Earth consisting of a complex mixture of hydrocarbons of various molecular weights, plus other organic compounds.  
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