Are compounds that contain a carbon-carbon triple bond.

Alkynes are compounds that contain a carbon-carbon triple bond.

Explanation:

The simplest organic compounds are formed excluseively by carbon and hydrogen. They are named hydrocarbons.There are 3 main types of hydrocarbons, namely alkanes, alkenes and alkynes.Alkanes posses only single bonds and have general formula Cₙ H₂ₙ ₊ ₂. E.g.: CH₃ - CH₃ (ethane).Alkenes have one or more double bonds between pairs of carbon atoms. E.g.: CH₃ - CH = CH₂ (propene).Alkynes contain one or more triple bonds between pairs of carbon atoms. E.g.: CH ≡ CH (ethyne or acethylene).Both alkenes and alkynes are named unsaturated hydrocarbons, because they have less hydrogen atoms than they could (if they only hade single bonds),  while alkanes are saturated hydrocarbons.

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