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===Alkenes===
 
===Alkenes===
 
===Alkynes===
 
===Alkynes===
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Alkynes are unsaturated organic compounds with at least one carbon-carbon triple bond.  In nature, alkynes are found in numerous plants and fruits, and most compounds can be readily synthesized industrially or in a laboratory.
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====Physical Properties====
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Overall the physical properties of alkynes are somewhat similar to those of alkenes.
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Alkynes have higher boiling points than the corresponding alkanes and alkenes:
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:Compound: Butane < Butene < Butyne
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:Boiling point: Low → High
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Most alkynes have low density and low solubility in water; conversely, alkynes are nonpolar and are readily dissolved in organic colvents.
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At room temperature, compounds with lower molecular weights are gases.
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===Aromatic Hydrocarbons===
 
===Aromatic Hydrocarbons===
    
[[Category:Chemistry]]
 
[[Category:Chemistry]]
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